Autocross and Wheel question

[Joeyy]

What is required for autocross and how bad will I suck with my stock wheels and tires? Is next Sunday a race day and anyone have an opinion on Rota wheels? Thanks for any ideas.

[MikeK]

Autocross is next saturday at Lovelock. The next (and last) weekend at stead is the first weekend of October. Full schedule here (http://www.renoscca.com/Events/2005/2005%20RenoSCCA%20Schedule.htm) ... look for all the "solo 2" events,

The stock WRX wheels and tyres are bad for going fast ... but great for learning on. I did several events on those last year, no problems at all. You just need to pump them up a few psi over normal pressures to stop the sidewalls rolling over during hard cornering. Lots of us have electric pumps so you can pump them up at the event.

[Dean]

What Mike said. I'd guess about 40PSI and bring a guage so you can check them between runs.

Rotas are OK, I also have a set of very light 17"s you might be interested in if you get serious next season.

[Kevin M]

Rotas are perfectly fine for people who aren't looking for every last bit of speed within their class rules. I've had some, pretty much everyone else around here has too. Dean's wheels are very light though, and as cheap as any Rota you'll find. Plus, we like to "keep it in the family" around here with regards to wheels. ;)

[Joeyy]

Thanks for the info. How about a helmet? Will a bowl hair cut work?

[MikeK]

The SCCA has some loaner helmets you can use for free.

[M3n2c3]

Dean, what model/color Rotas are you talking about? I may be interested in the near future if Joeyy doesn't call dibs.

[Nick Koan]

Dean, what model/color Rotas are you talking about? I may be interested in the near future if Joeyy doesn't call dibs.

I don't think Dean is talking about Rotas, but his Nippon Racing Lightstars

[M3n2c3]

I don't think Dean is talking about Rotas, but his Nippon Racing Lightstars

Hm, I must have misread his phrasing. Wow, those are very thin!

[Dean]

Hm, I must have misread his phrasing. Wow, those are very thin!They look thin,but we had a big long discussion on this back when I giot them. The actually have a greater cross sectional area in the spokes than the Rota SubZeros I have.

They are thicker at the rear of the spoke than at the face of the wheel, and they are fairly deep spokes. the cenetrs are also very strong because the spoke extends all he way to the center bore instead of stopping at outside the bolt circle like most wheels.

They would still be on my car if they fit over my Stoptechs.

[M3n2c3]

Gotcha. I couldn't see the depth in the official site's image, but that makes sense. What color?

I'm not trying to hijack the thread, but this remains mostly on-topic: anyone have any opinions to share on Rota vs. Enkei? I'm looking at the Rota Tarmac and Enkei RS7 in particular. :?:

[Dean]

Gotcha. I couldn't see the depth in the official site's image, but that makes sense. What color?

I'm not trying to hijack the thread, but this remains mostly on-topic: anyone have any opinions to share on Rota vs. Enkei? I'm looking at the Rota Tarmac and Enkei RS7 in particular. :?:Silver See pictures below. I think last I said was $300 incl a set of spline drive lug nuts...

I like Enkie and own 2 sets. one set of RP-F1 race weels for my Subaru, and one set of RP-01 race wheels for my Stealth. light and strong. Gary Sheehan ran both the RP-F1 and Rota SubZeros on his race car, so I would not question the durability of at least those models. The RP-F1s are about the lightest sub $1000/set wheels for the Subarus in a 17x8 that fit over the Stoptechs and STI Brembos. I also own 5 Rota SubZeros as well. One of them is bent though... I blame it on the thin spokes, or Mike E. running into something he won't fess up to. :-)

http://www.its-over.net/big_lightstar.jpg
http://seccs.org/gallery/Autocross%20Events/2004-04-17%20SCCA%20Test-n-Tune%20at%20Stead/DSCF0139.JPG
http://seccs.org/gallery/Autocross%20Events/2004-04-17%20SCCA%20Test-n-Tune%20at%20Stead/DSCF0138.JPG

[M3n2c3]

Hmmm. . .
http://www.jdpaul.com/randompix/impreza/wheeltest1.jpg

[Kevin M]

Don't forget the RE070s or Hankooks or Falken RT615s. ;)

[Dean]

Hmmm. . . I think they look good, but I am biased.

[MikeSTI]

put an inch and a half drop and it will look even better!!!!

[M3n2c3]

I think they look good, but I am biased.

I think they're starting to grow on me. What about the depth and bolt pattern?

put an inch and a half drop and it will look even better!!!!
I intend to, very soon. :D

[sperry]

I think they're starting to grow on me. What about the depth and bolt pattern?


I intend to, very soon. :D
Buy my coilovers! :P

http://www.seccs.org/forums/showthread.php?t=3539

[M3n2c3]

Buy my coilovers! :P

http://www.seccs.org/forums/showthread.php?t=3539

Then I can bounce my way to every thursday meet! Yay! :lol:

[Kevin M]

You'll hate that a lot less the first time you hit the track or autocross. Why do you think it took Scott so long to replace them in the first place? ;) And for what he's asking, you could have more comfortable setups, but you couldn't get a faster one. Although maybe Dean could. He makes DSM owners wonder how he manages to spend so little to go fast. :p

[Dean]

I think they're starting to grow on me. What about the depth and bolt pattern?They are 5x100 7.5" wide. If I recall correctly, they are ET 48 and under 16 pounds. I can throw one on a bathroom scale if you want.

[SlickNick112]

Dean, what is the offset?

[Dean]

Dean, what is the offset?
Sorry, ET = Offset.
If I recall correctly, they are ET 48

I'll check them tonight if I remember though.

[Nick Koan]

Now, I've seen this before and I've come to accept the fact that ET == offset...

but, does anyone know the reason why that is? Just curious.

[Dean]

ET = einpress tief

Rim Markings
Wheels are made with markings, usually on the rim, the meanings of some of which are fairly obvious, some less so. Consider a wheel marked "15x7J ET38." We should all know that 15 is the diameter, in inches, of the surface the tire's bead rests on, while 7 is the width, or the distance between the flanges that support the bead as air pressure forces it outward along the axis of the spindle. The J is not obvious, but is simple once you know: It simply refers to the shape of that flange, easier to understand if you imagine a steel wheel on which the lip is rolled over like a J. "ET" may or may not be present. It is an abbreviation of einpress tief, German that translates literally as "pushed in depth," or offset. The 38 is the offset measured in mm.

[Nick Koan]

Wicked. I never knew why, just knew that it was.

[MPREZIV]

Dean, the fact that you had that little bit of knowledge on hand is a little scary.

I have team dynamics Pro Race 1's in 17 inches. Super light, but not cheap, or easy to get. (made in the UK)

[Dean]

Dean, the fact that you had that little bit of knowledge on hand is a little scary.Google and the right keywords baby...

[JC]

You'll hate that a lot less the first time you hit the track or autocross. Why do you think it took Scott so long to replace them in the first place? ;)

I think the cost of replacing them might have had something to do with it. ;)

[M3n2c3]

They are 5x100 7.5" wide. If I recall correctly, they are ET 48 and under 16 pounds. I can throw one on a bathroom scale if you want.
That's ok - I'm still mulling them over vs. rota or enkei, but for the price I wouldn't be terribly concerned if they weigh 17lbs instead of 16lbs. ;)


Dean, what is the offset?
Nick, are you interested in Dean's wheels? If you are, go for 'em. I wouldn't mind having them for the price/performance, but they're not really my style. Aside from that, between suspension upgrades and other crap going on, it's likely going to be a month or two before I can afford any wheels at all.

These caught my eye while I was browsing yesterday:
http://www.jdpaul.com/randompix/impreza/enkei_or52_anthracite.jpg

OR52s in anthracite with a silver lip. . . mmm


You'll hate that a lot less the first time you hit the track or autocross. Why do you think it took Scott so long to replace them in the first place? And for what he's asking, you could have more comfortable setups, but you couldn't get a faster one. Although maybe Dean could. He makes DSM owners wonder how he manages to spend so little to go fast.
I'd love a nice set of coilovers, but I'll be autocrossing a lot less than driving to work, tahoe, reno, errands, etc. Bruspeed suggested that I hit one of the '04 STi owners up for their stock struts and then toss a nice set of lowering springs on them. For the potential price, it sounds like an optimum setup to me. :idea:

[sperry]

I'd love a nice set of coilovers, but I'll be autocrossing a lot less than driving to work, tahoe, reno, errands, etc. Bruspeed suggested that I hit one of the '04 STi owners up for their stock struts and then toss a nice set of lowering springs on them. For the potential price, it sounds like an optimum setup to me. :idea:

STi takeoffs usually go for around $600 or $700. Lowering springs are another $200 or so. You're still going to spend about $1000 for that setup, although they'll be more streetable for sure.

[SlickNick112]

Oh, no. I can't afford another set of wheels at this point. I'm still trying to find time and money to get my springs and headlights installed. Plus Heidi and I are currently trying to prep our house to go on the market here in the next couple of weeks.

I would love to have those, but my shallow pockets tell me otherwise.

[bruspeed]

STi takeoffs usually go for around $600 or $700. Lowering springs are another $200 or so. You're still going to spend about $1000 for that setup, although they'll be more streetable for sure.

Eeeh, paid like $550 for the whole setup, sometimes I guess It helps to "know people" :cool:

[Dean]

I double checked. The Lightstars are 17x7.5 ET 48 weight right about 16lbs on my precision bathroom scale. :)

[Kevin M]

about 16lbs on my precision bathroom scale. :)

Is that calibrated for Reno gravity, or sea level? :p

[Joeyy]

Ok, I'm in the mood to get in trouble with my better half. The itch has to be scratched. Dean, could you take a close up pick of your Light Stars for me and would you cry if I had them powder coated? If I don't put rubber on them until spring, I think I can hide them :D

[Joeyy]

Quote of the day- "If it has tits or tires, its gonna be trouble".

[Dean]

Ok, I'm in the mood to get in trouble with my better half. The itch has to be scratched. Dean, could you take a close up pick of your Light Stars for me and would you cry if I had them powder coated? If I don't put rubber on them until spring, I think I can hide them :DI'll try to grab a picture later. And feel free to powder coat them. Don't have to clean them then... :-)

[Dean]

Pic as promised. Sorry if it is slightly out of focus. My camera was still on manual focus from video mode. Click for full size. Wheels on cars are at the top of the thread.

[Joeyy]

Thinking about a dark powder coat with a little gloss and then Toyo Proxes RA-1. Have you heard anything about that tire and what do you think about size. Anywho, PM on a price...I'll take all the love you can give and give your wheels a good home full of love and Solo 2 events...you can even have visitation.

[Dean]

Thinking about a dark powder coat with a little gloss and then Toyo Proxes RA-1. Have you heard anything about that tire and what do you think about size. Anywho, PM on a price...I'll take all the love you can give and give your wheels a good home full of love and Solo 2 events...you can even have visitation.RA-1s are a bad Autocross tire. If you want real R compounds, Khumo and Hoosier are historically the only choices, but Hankkok may be changing that. If you want to run in the "street tire" classes, the Falken 615s are probably #1. If you can find a set of 215s still , they are a close second and cheap with the Hankooks are good cheap 3rd alternative. Read the GRM Article (http://www.grassrootsmotorsports.com/images/samples/august_100_115_tiretest.pdf) for everything you ever wanted to know about the current crop of tires...

Then come back and ask questions, and we wil lie about our experiences with each. :-)

Oh, and as stated earier in the thread, $300 with a full set of "tuner" spline drive lugnuts + a couple spares and 2 spline drivers.

[Joeyy]

What are the 2 spline drivers? What size tires would the wheels except?

[sperry]

What are the 2 spline drivers? What size tires would the wheels except?
Spline drives require a "key" adapter to turn 'em. He means he's got two of the key adapters he's tossing in, instead of just one.

17x7.5 will take up to a 235 width tire, however since you've got a little less fender space due to the wagon, 225 may be as large as you can go w/o doing a little fender rolling.

Sybir on the board here has a fender rolling tool that he rents out to those of us looking to fit some bigger tires. When done right, you'll be able to fit bigger tires and never even notice that the fender's been rolled.

Back to tire recomendations, I think Dean's list is pretty much right on. But for me, when talking about street tires for autocross, it's all about getting value, not all out grip. So I use the Hankook Ventus RS-2's in 235/40/17. They've got about a 9" wide contact patch, plus the rolling diameter is slightly undersized, which helps acceleration. And while they're not as sticky as the RT615's, they're like $60/tire cheaper! For $100/tire, you can't go wrong w/ the Hankooks, especially if you're just getting into autocross and the #1 thing that'll make you faster is seat time, not tires (tires are #2).

Now if you want to talk *track* tires, then I'll give you a hearty thumbs up to the RA-1's call. I'm pretty sure I'll be getting a set of those for next season's solo/track trials. Granted they're not an all out fast tire, they're much sticker than street tires once they heat up, and they'll last a long time. That's why they're the spec tire for lots of racing series.

[Dean]

What are the 2 spline drivers? What size tires would the wheels except?The drivers are for the lug nuts. Also called keys. Here is the SubyDude (http://subydude.com/osc/product_info.php/cPath/220_21_92_132/products_id/45?osCsid=1e375ab974f9f8f2d3a67db22caa6cac) equivelent. They want $2.25 a lug plus $15 a key. I have 22 lugs, and 2 keys I'm throwing in. A $75 value if I did the math right. You need some type of "tuner" lug nuts for many aftermarket wheel because there isn't room for a standard lug, and socket in the lug holes.

I ran 225/45-17 Falken Azenis Sports (215s) which are wider than many 245s...

[Joeyy]

The better half said yes to the wheels. I'm off Tuesday if your available. Don't know if you work during the day or if your just like retired or something. :lol:

[MikeK]

... or if your just like retired or something. :lol:

I think the price of those wheels just went up

[Joeyy]

Checking in the morning with the local Truckee tire hook up on the RT-615. Deans wheels could have rubber on them before you now it. Hope they can match some of the prices I've seen on line. I'll let everyone know if they can beat the prices with install and stuff. We could get lucky with some killer deal. Drop a line if we wanted to do a group buy or something. I think I'm doing the 225/45-17 the guy may strike a deal for a mass order or something like that. I'll post later with the price of 4 verses 8 verses 16.

[Joeyy]

Let one of my first threads live. So the question pops back up for 2007. What tires to run at autoX this year. For a short time, I considered going with a R compound but the idea quickly faded. The idea of changing the wheels on and off so much just just killed the idea.

On to street tires. Last year I ran the 615's and was very happy for 3/4 of the year. I don't know if it was the tires getting harder or how hot I got my brakes after Lovelock but the handle just became worse. I thought about running 615's again but using two pair for the season. Then the idea of spending a little more money for a different tire came up.

I looked into the Bridgtone RE01R, Yokohama Neova and at the Hankooks. I believe everyone runs at least one of these tires. I looked back at this thread and looked at the link Dean put up to GrassRootsMotorsports Mag http://www.grassrootsmotorsports.com/images/samples/august_100_115_tiretest.pdf . The article made my mind up on the 615's last year.

I've not made up my mind but am currenly leaning in the direction of the Yokohama Neova. Any thoughts people. The order will be placed soon, so save me quick if I'm making some great big mistake. Thanks D-

[Joeyy]

Tire price update.

Yokohama Neova at Vulcan Tire-$197(need to be shipped) and at Tire Rack (no shipping) $202
615's at Vulcan Tire-$119(need to be shipped)

[MPREZIV]

My only input on this subject is: if you go with the Bridgestones, find someone else to mount them!

Not very helpful, and I know you've all heard it a million times now, but that's all I got. I loved my 615's last year. I can say that they were very predictable, traction wise, which made setting up the car easier.

[Dean]

Bang for your buck, the 615s can't be touched except perhaps some take off RE070s.

If you look at last year's results from ST classes at nationals, there was a mix.

Trophy positions:
STS: Bridgestone, Falken, Falken, Khumo, Falken Bridgestone, Falken, Falken, Falken, Falken, Falken, Yokohama
STS2: Falken, Falken, Khumo, Falken, Falken, Falken, Falken,
STX: Falken, Falken, Hankook, Yokohama, Yokohama, Yokohama, Falken, Khumo, Yokohama, Yokohama, Yokohama
STU: Yokohama, Yokohama, Yokohama, Yokohama, Yokohama, Yokohama, Bridgestone, Yokohama, Yokohama, Yokohama, Yokohama, Yokohama, Yokohama

You could go Yokohama, but at about $100 more per tire, I would go R compound instead.

[Kevin M]

I'm curious about contingencies for Bridgestone vs. Yokohama. The dominance of Yoks in STU particularly makes me think people picked them based on that.

<- wants RE01s.

Also Derrick, you can't count on your tires staying sticky for the whole year. And if you know for sure that you'll buy 2 sets, going with the RT615s might be the best choice since 1/2 way through the season, fresh anything is better than half-2/3 used anything as far as the top street tires go. You would also be sure to get a full season out of 2 sets of shaved tires, which would be the optimal setup I think.

[dknv]

I'm curious about contingencies for Bridgestone vs. Yokohama. The dominance of Yoks in STU particularly makes me think people picked them based on that.
I wasn't aware of any national event contingencies that Bridgestone had, but Yoko certainly had them; I think I got some Yokohama money myself last year. :)

Another reason Yokos were so prevalent in STU, is that the optimal sizes were available, vs. some of the other manufacturers. (Or maybe that was non-turbos; the turbos may have been able to get either in the 245's.) Yokohamas are more $$$, they are a good tire, but so is the 615 for the Subaru. And that said, I want to try some RE01R's this year too.

[Dean]

You would also be sure to get a full season out of 2 sets of shaved tires, which would be the optimal setup I think.Two sets of shaved 615s is probably a pretty good choice. Shaved should wear better and handle heat better. The retread guys out in sparks do the better shaving IMHO. Used to be Silver State. Matt knows the new name.

[dknv]

Two sets of shaved 615s is probably a pretty good choice. Shaved should wear better and handle heat better. The retread guys out in sparks do the better shaving IMHO. Used to be Silver State. Matt knows the new name.Who, where, name, phone number?

[Dean]

They appear to have been bought by ATD, but the shop name is still Silver State...

Silver State Tire
550 Dunn Circle
Sparks, NV 89431
Phone: 1-800-866-8473 / 775-358-8473
Fax: 775-355-6740

[Joeyy]

Stupid question incoming....DUCK!...

Do they shave the tires mounted on the wheels or off?...

Ok, it's save to look now.

[Dean]

Do they shave the tires mounted on the wheels or off?...Silver state actually grinds the tire unmounted. Sunshine cuts them mounted. The former leaves the surface flat but fuzzy. The later leaves them grooved, and IMHO takes a bit more wear to get flat again.

[Kevin M]

I want warm fuzzy tires!

[Joeyy]

I want warm fuzzy tires!

And your tire choice for 2007?..Drum roll............

[MikeK]

I can give you a full review of the RE-01Rs *




(* offer not valid until october 2007)

[Kevin M]

And your tire choice for 2007?..Drum roll............

I'll eventually have 235/40R17 RE01s, but I'm trying to pry Cory's old RT615s from him so I can afford coilovers for the first couple events. :lol:

[Kevin M]

Also I'm considering shaving my tires this year, since I don't want to heat cycle them to death with street driving.

[MPREZIV]

I'll eventually have 235/40R17 RE01s, but I'm trying to pry Cory's old RT615s from him so I can afford coilovers for the first couple events. :lol:

You have yet to make me a $ offer dude! :P


Plus, if Uncle Sam doesn't get off his ass with my refund, I will be starting the season on them myself! :lol:

[M3n2c3]

I'll be running the same 615s I had last year, seeing as how I've got less than half a season on them. . . :|

[JonnydaJibba]

Babies are ruining autocross.

[MattR]

Hoosier A6's, eta march 7th.

[MikeK]

Hoosier A6's, eta march 7th.

You need a Darth Vader voice when you say that :cool:

[M3n2c3]

Hoosier A6's, eta march 7th.

Mongol General: "What is best in life?"
Conan: "To crush your enemies, to see them driven before you, and to hear the lamentations of their women."

[MattR]

Well, now that I'm on race tires, can I start complaining about the street tire pax???? God help us.

:lol:

[Dean]

Well, now that I'm on race tires, can I start complaining about the street tire pax???? God help us.

:lol:Yes, yes you can... But you have to hang out with the Corvette crowd. :)

If your tires can handle it, it would be interesting some afternoon to swap tires between our cars.

Though they won't be exactly the same size, it would be interesting.

[Joeyy]

I had a dream last night about Yokohama Neovas. Is this a sign?

[sperry]

I had a dream last night about Yokohama Neovas. Is this a sign?
Of your divorce, perhaps. :P

[Joeyy]

Of your divorce, perhaps. :P

After getting this thread up and running, I got to looking at last years 615s. They have plenty of wear left in them. They are just hard as hell. I would like 235s this year but shit happens.

[cody]

I'll be running last years RT-615's this year. Less traction is more fun anyway. :P

[Dean]

After getting this thread up and running, I got to looking at last years 615s. They have plenty of wear left in them. They are just hard as hell. I would like 235s this year but shit happens.3 words... pre run burnouts. :)

[sperry]

3 words... pre run burnouts. :)
:lol: Three more words: good bye transmission. ;)

(okay, so that's really two words...)

[Kevin M]

After getting this thread up and running, I got to looking at last years 615s. They have plenty of wear left in them. They are just hard as hell. I would like 235s this year but shit happens.

Shaving them a little bit will help.

[Joeyy]

Shaving them a little bit will help.

Thanks for the info. This may be the answer I was looking for to save some bucks. Do you think I should pull them off the wheels and make them fuzzy or leave them mounted and go to the other place?

[Kevin M]

Ask someone who has done tire shaving before. :lol: I might do my Bridgestones like I said, and if I do I will shave them before I mount them I think.

[Joeyy]

Ok, my next question. Do you all fill your compressed air tanks with your own compressor or can you fill them other ways. I don't have one yet but I figure you can pick one up almost anywhere. Secondly, what do you all think about shaving last years tires?

[Dean]

I ground a set of Hankooks that had been overheated at the track.

Most places won't cut used tires because they don't want to hurt the cutter blade.

Is it really worth the effort to dismount, grind and remount? That sounds nasty, don't it?

[Joeyy]

My tire "guys" will do it for beer so the dismount isn't a big deal. So you think they can grind some of the surface?

[Dean]

My tire "guys" will do it for beer so the dismount isn't a big deal. So you think they can grind some of the surface?Sure, but it may not help much and cost you 15-20 a tire.

[MikeK]

Well, now that I'm on race tires, can I start complaining about the street tire pax???? God help us.

:lol:

I ran into Jim U today, he said all the corvette guys are pissed at the "T" rules. I think Lucas spanking them by so much last year has a lot to do with it.

[sperry]

I ran into Jim U today, he said all the corvette guys are pissed at the "T" rules. I think Lucas spanking them by so much last year has a lot to do with it.
Um, why don't they all run street tires then? It's not like they're getting beaten by the rules, they're getting beaten by a guy which a soft enough right foot to make the T rules advantageous on a Vette.

Oh, and Derrick, you can fill up an air tank at the gas station for like $.75, or for free if you're buying gas (just go inside and ask for quarters to use in the machine, most places will give you air for free if you're a customer already).

[Dean]

Ok, my next question. Do you all fill your compressed air tanks with your own compressor or can you fill them other ways. I don't have one yet but I figure you can pick one up almost anywhere. I missed this earlier. If you don't already have a compressor or tank, I would suggest one of the GOOD small 12v compressors. I burned up 3 of the 9.99-19.99 ones before getting a "truck air" that I have used for about 6 year now. These higher quality usually fan cooled models run $30-50.

http://dieselgalaxy.com/product.php?productid=43369

There is also a pretty good looking one at Costco, but I have no experience with it.

Tanks are faster, but compressors are smaller, require less planning, and can do as many tires as you have time for...

[eggeegg]

so where do you guys buy wheels here in reno? i want to get the enkei or52 that's shown earlier in this thread. the only place i know of to start shopping is les schwab and this one place on mill.

[Dean]

so where do you guys buy wheels here in reno? i want to get the enkei or52 that's shown earlier in this thread. the only place i know of to start shopping is les schwab and this one place on mill.Egad no... www.TireRack.com www.discounttiredirect.com, www.edgeracing.com, buywheelstoday.com...

Figure out what you want, and then shop the Internet...

[eggeegg]

thanks. will bookmark those for sure. edgeracing seems to be where i want to go. need to see what really fits though.

[Dean]

thanks. will bookmark those for sure. edgeracing seems to be where i want to go. need to see what really fits though.Why do you say that? They may have the smallest inventory compared to the others.

I would also suggest you tell us what your objective for the new wheels are and we can point you toward the key features / sizes you mist want to focus on.

diameter, Width, offset, weight and cost all play a part in an informed decision in addition to looks. :)

[Joeyy]

I ran into Jim U today, he said all the corvette guys are pissed at the "T" rules. I think Lucas spanking them by so much last year has a lot to do with it.

I can't wait to see the new Lucas Machine.

[eggeegg]

You're right, other sites have a bigger selection, like discounttiredirect. for now, basically i just wanted to replace the stock wheel and keep the 215/45r17 re92 tires. just for daily city driving now.

as far as i know stock wheel size is 17x7 5-100. do you know the exact wheel offset? according to http://forums.nasioc.com/forums/showthread.php?t=335263 for 7.0" it's +50 to +53. but when i do a search for wheels at discount tire direct for my car year/model (17 size wheel), they give back wheels with offset from 38-48. what offset do i really want?

[Kevin M]

+48 is as low as you want to go. Ideally you get between 50-53. If you're not planning to replace your tires yet... then wheel choice is a lot less important other than that. :lol:

[eggeegg]

ok, so i've decided to get a new tires if i got new wheels. this is what i'm planning to get now (95% sure).

5zigen Fn01r-c (gloss Black), 17x8 - 5x100 - ET48
Falken Ziex Ze 512 (ultra high performance, all season), 225/45R17
$1,281.93 incl shipping (please let me know if i can get a better deal somewhere else)

Again, mainly for regular city driving around Reno. Wanted to keep the driving feel somewhat the same as stock. Above sound ok? i'm new to tires and wheels and i think this is the best setup for me from what i found researching this stuff.

it'll look almost like this on my car
http://i44.photobucket.com/albums/f7/kaeo_15/powerslot.jpg

[Kevin M]

That's an excellent daily driver tire, but I don't think anybody has autocrossed on them, so it's an unknown there. but if you're keeping your stock wheels and tires, you can use those in the winter and get something a little more aggressive, like Kumho MX, Hankook RS2, or Falken RT615s for summer.

[Dean]

2 things.

225s on an 8" wheel will likely have the rim overhang the tire, so curb rash might be an issue. My 225 snows have this issue. I can't even stack them in the garage without rims rubbing each other. And I've slightly borked the spokes when the wheels fell over on their face.

225 Falken 615s are fine because they are wider.

You might also consider the Khumo ASX if you are positive you want all season. I have a set on the Audi, and they are pretty damn good compared to tires that are up to 50% more expensive...

http://www.tirerack.com/tires/tests/testDisplay.jsp?ttid=52

Are you looking for 4 season tires, or all but winter? If the later, there are definitely better choices.

[sybir]

Those are excellent DD tires, but they're pretty low in terms of ultimate grip and will be frustrating for AutoX. If you're looking for an all-season that will grip near a summer tire, the PZero Nero M+S is a good choice, but it's still a compromise. As others have said, you'd be better off going with a tire like a Hankook Ventus or RT-615 on new wheels for summer/autoX, and run your stockers in winter.

[eggeegg]

yes, i plan on keeping the stock wheels and tires. sounds like 615s are the way to go and then just use the stock in the winter. perhaps i might want to AutoX this summer. thanks for the input everyone.

[MattR]

Yeah, those 512's run really narrow. I had 235's on my 8" wheels and they were pinched, the 245's fit really well though.

[M3n2c3]

so where do you guys buy wheels here in reno? i want to get the enkei or52 that's shown earlier in this thread. the only place i know of to start shopping is les schwab and this one place on mill.

A word of warning - I never found out if those OR52s are actually available in Scoob fitment (offset, etc.), and I saw them once in person on an Acura. . . they're actually not that nice. Kinda ricey. :(

[khail19]

A word of warning - I never found out if those OR52s are actually available in Scoob fitment (offset, etc.), and I saw them once in person on an Acura. . . they're actually not that nice. Kinda ricey. :(

It looks like everything in 5x100 is a 38 offset. So no good for a WRX. And the 17 inch size is only 7" wide, so not the best wheel for autocross either.

[eggeegg]

ya, the offset was too low for subarus. that's why i went with the 5zigen. it did look nice in the picture though. 5zigens look good too.

[MattR]

Hoosier A6's, eta march 7th.



I picked up my stickies today....All mounted up on their brand new Gold Enkies. Right on time. They are so hot.

[M3n2c3]

ttiwwop! :P

[MikeK]

I picked up my stickies today....All mounted up on their brand new Gold Enkies. Right on time. They are so hot.

You should get a set for the titan.

[Kevin M]

You should get a set for the titan.

You should get a set for your new uberwagon.

[eggeegg]

Where do you guys go to get your tires mounted on wheels? Just anyplace like Big-O? I'm getting tires and wheels seperately from Internet.

[Nick Koan]

Big-O will do it for you, so will most tire places. They will grumble a little bit, and it could cost up to $20 a tire. I'd call around and ask what they will charge for tire mounting and balancing.

[dknv]

I picked up my stickies today....All mounted up on their brand new Gold Enkies. Right on time. They are so hot.Hoosier crack-pipe season.
Have you raced on Hoosiers before?

[MattR]

Hoosier crack-pipe season.
Have you raced on Hoosiers before?

Nope, this will be the maiden voyage. I'm pumped.

[sybir]

Street tires are ruining autox :p

http://www.hooptywagon.com/img/IMG_0154.JPG

I had to run some spacers to clear the suspension, but I think this'll help shave off a few 10ths.

http://www.hooptywagon.com/img/IMG_0156.JPG
http://www.hooptywagon.com/img/IMG_0158.JPG


Sorry, Nick, I couldn't resist :D
These things are hot as hell, makes me miss white wheels.
Can you tell I'm going nuts without my car?

[Nick Koan]

Hmmm, so my new tires are nearly as tall as stock OB tires? I may need to invest in some shorter tires soon.

Thanks for the pics mang.

[sybir]

Indeed, they're pretty beefy.

[Joeyy]

No more money!...:( Yep, it's final. It will be last years tires for some time to come.

[Kevin M]

Nick and Cody are going to be heartbroken. :(

[Nick Koan]

Nah, Derrick will still be a contender with old tires. I still gotta keep my game up.

Still not too worried about Cody though :p

[NevadaSTi]

The SHITE floweth freely in here!!

[M3n2c3]

No more money!...:( Yep, it's final. It will be last years tires for some time to come.

At least you know you won't be the only one on last year's 615s :lol:

:(

[Dean]

You boys in ESP better be careful or Sue will have to knock you around in her WRX. Maybe she should run in open class... :)

Her NEW 615s on black SubZeros look HAWT and fast on her white wagon.

[MattR]

I ran on old tires last season, I did okay. Just drive better and you'll hardly notice.

[MPREZIV]

Just got my monies from Uncle Sam! 235/40 615's on the way!

[Kevin M]

w00t! Gimme yo leftovers y0!


Man, I gotta stop sayin that.

[sperry]

I'll start the season on old 615's... IIRC I got them half-way through the season last year... so they've got half a season, and a winter of garage storage on 'em. I don't expect them to be awesome, but they'll be better than the $600 for a new set.

[cody]

Nah, Derrick will still be a contender with old tires. I still gotta keep my game up.

Still not too worried about Cody though :p

Pshh, whatever, my car's way more...








yellow than yours.

If I can just keep my car out of the body shop, I'll be happy.

I'm on last year's 615s too.

[Nick Koan]

Actually, for the start of the season I'll also be on someone else's last year's 615s :p

But, they're new to me!

[MPREZIV]

w00t! Gimme yo leftovers y0!


Man, I gotta stop sayin that.

Gimme money Nukka!

I ain't GIVIN' a damn thing!

[Kevin M]

It was worth a try! PMed.

[NevadaSTi]

I'm on last year's RE070's with only one day at autocross on them. I should be good for the whole season. I hope.

[tysonK]

I need to get on the ball after the stock advans wear out.

285/30/18
18x9.5 +35
5mm spacer in front and rolling fenders in back.
evo contact patch.

[M3n2c3]

It was worth a try! PMed.

Don't forget about me ;)

[Bob Danger]

I've got some snow tires on some wheels, now if I only had a car to put them on.

[Dean]

I need to get on the ball after the stock Advans wear out. [...]285/30/18Ah, the $1300 annual commitment. Street, or R compound... Good luck with that. I am pretty damn sure Señor Cheap Bastard isn't going into that territory. That's a new turbo, 1/3 of a wide body kit, etc...

These numbers do not include the $2000-3000 custom wheels, or the $3000 hub conversion + $1000-2000 wheels I'd need to run them. ;)

615s: (Vulcan incl. shipping)
225/45/17 $480
235/40/17 $510
255/40/17 $560

Hoosiers: (Tire Rack incl. tax)
245/40/17 $1020
285/30/18 $1290

[Kevin M]

Don't forget about me ;)

No problem. But uh, don't stop reminding me. :lol:

[Kevin M]

Ah, the $1300 annual commitment. Street, or R compound... Good luck with that. I am pretty damn sure Señor Cheap Bastard isn't going into that territory. That's a new turbo, 1/3 of a wide body kit, etc...

These numbers do not include the $2000-3000 custom wheels, or the $3000 hub conversion + $1000-2000 wheels I'd need to run them. ;)

615s: (Vulcan incl. shipping)
225/45/17 $480
235/40/17 $510
255/40/17 $560

Hoosiers: (Tire Rack incl. tax)
245/40/17 $1020
285/30/18 $1290


If you'd bought an '05 in the first place, you could be on 285/30R18 R compounds for ~$2100, or 275/35R18 RT-615s for under $2000... with forged wheels. Next year 18" tires will be cheaper because so many people are going to them.

18s are the new 17s.

Also, the hub conversion is well under $1000... plus there are a million off the shelf wheel sets in 18x8.5 or wider.

Bottom line Dean, your car will be beatable until you go to 18s. Same with all of us really.

[Dean]

Caught you editing...
If you'd bought an '05 in the first place = $3000-5000+ for car + $X000 in parts I couldn't use.
275/35R18 RT-615sYou edited this.... :P
for under $2000... with forged wheels.Forged 18 x 10 wheels + $1290 ($914 after edit) tires... for < $2000, where do I sign up?
Next year 18" tires will be cheaper because so many people are going to them.Tires that are only "stock" on 1/2 of a Porsche, maybe, as far as I can find, and insane autocrossers are not going to come down substantially. :)
Also, the hub conversion is well under $1000...Installed on an '04 STI with all associated brake and drive line changes? Where?
plus there are a million off the shelf wheel sets in 18x8.5 or wider.So? To run a 285, you really need 10"+ wheels.
18s are the new 17s.While this may be true to some extent in higher end cars, 285s are not the new 225s...
Bottom line Dean, your car will be beatable until you go to 18s. Same with all of us really.So? My car will be beatable until I get the right one for a specific class and prepare it to the limits of that class and learn to drive it better than everyone on the planet... :rolleyes:

[sperry]

If you'd bought an '05 in the first place, you could be on 285/30R18 R compounds for ~$2100, or 275/35R18 RT-615s for under $2000... with forged wheels. Next year 18" tires will be cheaper because so many people are going to them.

18s are the new 17s.

Also, the hub conversion is well under $1000... plus there are a million off the shelf wheel sets in 18x8.5 or wider.

Bottom line Dean, your car will be beatable until you go to 18s. Same with all of us really.
Dean pretty much covered this, but the hub conversion is significantly more than $1000.

A grand gets you the new front knuckles/hubs, and rear bearings/hubs, and ABS tone wheel spacers to make the '04 front axles compatible with the '05 front knuckles.

So then you have to get the rear hubs pressed into the knuckles, and have the tone wheel spacer installed.

Then it's on to finding brake rotors. I tried to have mine drilled with the new bolt pattern: the rears were no-go... for some reason putting the right pattern on there isn't enough to make 'em fit... I dunno if C&C screwed up the pattern or what, but it looked right, measured right, and still wouldn't seat. The fronts were a little better after I brought them back twice to be over-bored, either way the only real way to get the right brake rotors is to buy them... so that's like $1200 for a pair of front StopTech rotors w/ top hats, and $300 something for rear GrN gravel rotors (which are cheaper than the STi Brembo rotors that most people doing this conversion have).

Then there's the worst part: getting the suspension to bolt to the front knuckles. Frankly, the right way to do it, is to just sell your existing struts and buy some new '05 STi coilovers. Since I had just purchased a set of '04 STi Tein SuperRace's (which are retarded expensive) there's no way I was gonna take the $1000 hit to sell 'em as used (with one track weekend on 'em) and buy an '05 set when all I needed was a pair of the '05 bottom brackets. But I ended up having to argue with Tein USA for like a week getting them to agree to sell the brackets to me with zero warranty, etc, etc, etc, for $500 freaking bucks.

And if you're like most people, once the hub conversion is done you're off shopping for new wheels, which pretty much always cost more than you'll get selling your old wheels.

I think I spend more like $3000 or $4000 on my "$1000 hub conversion". But I was able to toss some 255 Sport Cups shod 17x9 wheels on the car finally, and picked up like 5 seconds/lap at RFR over guys that were normally about the same speed as me. So, it was beneficial to the car... but I'm pretty sure it's not worth all the money and time unless you've got a car like mine that's already so modded that it has no resale value to begin with.

[Kevin M]

Caught you editing...
And? I had to doublecheck size/price of RT615s. I normally don't look at the wider sizes.
...in tires.

= $3000-5000+ for car + $X000 in parts I couldn't use.
Senior Cheap Bastard forgets that the car would have been worth $3-4000 more, so it's a wash there. And you bought basically all your WRX parts used, and S.C.B. is one of those guys who generally gets back as much if not more than he pays when he sells his used parts. So boo-hoo. :p

You edited this.... :P
Yep.

Forged 18 x 10 wheels + $1290 ($914 after edit) tires... for < $2000, where do I sign up? $1000 Gram Lights 57F from Gruppe-S will bear wider tires in better diameters than anything you can run in 17" at the same total price. So why would you "need" 18x10s to move up? Show me a good 17x8.5 or wider wheel at a decent weight for less than that.

Tires that are only "stock" on 1/2 of a Porsche, maybe, as far as I can find, and insane autocrossers are not going to come down substantially. :)
Dean, 18s are stock on the freakin' Cobalt SS, Solstice, Sky, MP3, and many other low-priced cars now. Most come with stock 18x8s. There will be PLENTY of tires available for wheels that size and a bit wider this time next year, at a reasonable increase in cost over 17s.
Installed on an '04 STI with all associated brake and drive line changes? Where?
You have Brembos... why can't you just switch to '05 rotors? Was there a caliper change I was unaware of?

So? To run a 285, you really need 10"+ wheels.
It's ideal but not "needed." Personally I'd prefer 285/30R18 on 8.5" than 255/40R17 on 8 or 8.5" wide wheels.

While this may be true to some extent in higher end cars, 285s are not the new 225s...
18s have become standard on a long, long list of cars starting in MY06. The aftermarket wheel and tire industry is not blind; there will be lots of wider than stock but same or very similar diameter tires shortly.

So? My car will be beatable until I get the right one for a specific class and prepare it to the limits of that class and learn to drive it better than everyone on the planet... :rolleyes:
I know Dean... I'm just saying that if you had looked ahead a little more when you were buying this car you could have been running the optimal tier and wheel package at a minimal increase in cost for the first few years.

[sperry]

$1000 Gram Lights 57F from Gruppe-S will bear wider tires in better diameters than anything you can run in 17" at the same total price. So why would you "need" 18x10s to move up? Show me a good 17x8.5 or wider wheel at a decent weight for less than that.

Enkei RPF1's in 17x8.5, 17x9, and 17x9.5 are at that price IIRC.

It's ideal but not "needed." Personally I'd prefer 285/30R18 on 8.5" than 255/40R17 on 8 or 8.5" wide wheels.

A 9" wide rim is really the practical minimum for a 255. You can run them on a 8" or 8.5", but at a performance loss (I know I can feel the added slop at turn-in autocrossing on 255 width 615's on 8" wide wheels). Putting a 285 on an 8.5" wide rim is retarded. You need 10" wide wheels for a 285 or you're spending 285 width dollars for 235 width performance.

If you're going to spend the money on wide tires, spend the money on the right width wheels for them.

[tysonK]

My little comment got some action that was cool.

AFIAK there is no 285/30/18 RT-615? Or am I looking at the wrong sites? I will probably end up with a 275 that is harder to fit b/c of the diameter difference.
Some of the evo guys run wide tires for the street. With addtional "extreme" camber and suspension adjustment I should be able to run what I want without too much hassle. I might roll the fenders just in case. As far as budget allows, I like the 18X9.5 Enkei fn01rc, they go for around $280 a piece.

But I'm sure none of you Hub Converting Subaru guys care. w3rd!

It's going to an interesting season.

[Dean]

I know Dean... I'm just saying that if you had looked ahead a little more when you were buying this car you could have been running the optimal tier and wheel package at a minimal increase in cost for the first few years.Kevin, I knew about 285s and 18s when I made my purchase. The day I want to pay Porsche prices for tires, I'll buy a Porsche thank you very much. If Tyson etc. wants to spend that kind of money on tires and wheels, more power to them.

Argh... I agree 18s are everywhere, but my point is that 285s will never be commonplace. Except maybe as rears on high HP RWD cars, they are not a reasonable street tire. They will hunt like the dickens, eat gas, and just plain be a pain.

Also as the sidewalls get shorter, you MUST use the right width wheels or risk bead failure under load. 285/30/18s on 8.5" wheels is just silly. That is almost 3" worth of tire with that has to be compensated for in on a 30 profile, compared to 2" on a 40 series 255 on an 8" which is even a little much...

And Scott already re-explained the hub conversion.

I bought the car I wanted, fully informed. I do not regret my selection. I wish all 285 tire purchasers the best of luck. I'm going to keep trying to drive better on my cheap bastard compromise thank you very much.

By the way, I hear 285s on 18s are the right solution for SP Legacy's... Go for it.... ;)

[MikeK]

I will probably end up with a 275 that is harder to fit b/c of the diameter difference.
Some of the evo guys run wide tires for the street. With addtional "extreme" camber and suspension adjustment I should be able to run what I want without too much hassle. I might roll the fenders just in case.
Just jack the evo up another couple of feet, it'll be fine then

[Kevin M]

<snip>If you're going to spend the money... spend the money<snip>

I'm nto the one that needs convincing on this count. :lol: Dean's the one who will invest $20,000 in his STi but acts like $22,000 would be a crime.

To be honest Dean, I cant reconcile how someone as frugal as you (not to be confused with "cheap" or "miserly") can justify autocrossing and tracking to himself in the first place. :p

[MikeK]

That's Señor Frugal to you

[Kevin M]

Kevin, I knew about 285s and 18s when I made my purchase. The day I want to pay Porsche prices for tires, I'll buy a Porsche thank you very much. If Tyson etc. wants to spend that kind of money on tires and wheels, more power to them.
Dean, there will be 285 width performance street tires in more flavors next year, at lower prices than they are currently. They are no longer tires for exotic supercars.

Argh... I agree 18s are everywhere, but my point is that 285s will never be commonplace. Except maybe as rears on high HP RWD cars, they are not a reasonable street tire. They will hunt like the dickens, eat gas, and just plain be a pain.
High-horsepower cars that run 18" wheels are commonplace, right now. You're ignoring how free markets work if you don't think there will be more, better, and cheaper solutions every spring from now until eternity.

Also as the sidewalls get shorter, you MUST use the right width wheels or risk bead failure under load. 285/30/18s on 8.5" wheels is just silly. That is almost 3" worth of tire with that has to be compensated for in on a 30 profile, compared to 2" on a 40 series 255 on an 8" which is even a little much...
I'll concede the point on 285s. I wouldn't run them on 8.5" wheels either. But there are plenty of wheels available now in 18x9.5 or wider that fit the '05+ STi. Check the Wide Tire thread on nasioc if you feel like I list. It's not an option for me and my 130hp right now so I don't have any committed to memory, although I believe there are Koseis, Enkei RPF1, and FN01-RCs available in such sizes, all in the low $1000 range for a set. Also, apparently Rota is starting to bring 9" wide and greater wheels to market for the car.

And Scott already re-explained the hub conversion.
You didn't answer the question I posed to you though- can't you just use '05 rotors on your '04 calipers? OR did they change?

I bought the car I wanted, fully informed. I do not regret my selection. I wish all 285 tire purchasers the best of luck. I'm going to keep trying to drive better on my cheap bastard compromise thank you very much.
Inever said you would regret it or be unhappy. My argument was that it was not nearly as expensive (or as stupid) as you made it sound to do what it takes to run class-leading wheels and tires.

By the way, I hear 285s on 18s are the right solution for SP Legacy's... Go for it.... ;)
Soon as I own an autocross Legacy, I'll get right on that. ;)

[Dean]

I'm nto the one that needs convincing on this count. :lol: Dean's the one who will invest $20,000 in his STi but acts like $22,000 would be a crime.

To be honest Dean, I cant reconcile how someone as frugal as you (not to be confused with "cheap" or "miserly") can justify autocrossing and tracking to himself in the first place. :pYour math continues to amaze me... You just don't get it... It would have cost me many thousands more to go to an '05... I've tried to explain, but I don't have the energy to go over it line by line with you. I made a conscious informed decision I am happy with. Sorry if you wouldn't have done the same thing.

I'd autocross or track one of my old '78 Lancia Betas if that is what I could afford and justify because I enjoy it.

[dknv]

.. 9" wide rim is really the practical minimum for a 255. You can run them on a 8" or 8.5", but at a performance loss (I know I can feel the added slop at turn-in autocrossing on 255 width 615's on 8" wide wheels). Putting a 285 on an 8.5" wide rim is retarded. You need 10" wide wheels for a 285 or you're spending 285 width dollars for 235 width performance.
I suppose it depends what kind of tires you are talking about. 2 top-level BS drivers at SD were on 285/30-18 hoosiers on 18x8 SSR's, one of them placed 2nd in class. Another back east is running 285/30-18 kumho's on 18x8 SSR's, he took 1st at the Dixie NT. We tried the 285 hoosiers last year, they look weird when mounted but they launched great. I did not think they handled transitions well, but I may just needed to have learned to handle them differently, or the car setup may needed to have been adjusted for them.

[Kevin M]

I suppose it depends what kind of tires you are talking about. 2 top-level BS drivers at SD were on 285/30-18 hoosiers on 18x8 SSR's, one of them placed 2nd in class. Another back east is running 285/30-18 kumho's on 18x8 SSR's, he took 1st at the Dixie NT. We tried the 285 hoosiers last year, they look weird when mounted but they launched great. I did not think they handled transitions well, but I may just needed to have learned to handle them differently, or the car setup may needed to have been adjusted for them.

These were both B Stock cars right Deb? That makes a big difference. Generally it seems that stock class drivers stuff the biggest tires they can possibly make fit on their largest allowable wheels, whereas ST/SP/SM drivers prefer extra wheel width whenever possible. They find the widest tire that fits underneath the car and buy wheels appropriately. I only argued that Dean (and other turbo Subaru drivers) should strongly consider 18x8.5s over 18x10s or wider for cost purposes.

[dknv]

These were both B Stock cars right Deb? That makes a big difference. Generally it seems that stock class drivers stuff the biggest tires they can possibly make fit on their largest allowable wheels, whereas ST/SP/SM drivers prefer extra wheel width whenever possible. They find the widest tire that fits underneath the car and buy wheels appropriately. I only argued that Dean (and other turbo Subaru drivers) should strongly consider 18x8.5s over 18x10s or wider for cost purposes.Correct, BS RX8's. The turbo ST's (STX/U) are still stuck at 245's though, right?

[Kevin M]

Correct, BS RX8's. The turbo ST's (STX/U) are still stuck at 245's though, right?

I can't remember, but I think STU is limited to 245 by AWD, but not limited on wheel width.

[sperry]

I suppose it depends what kind of tires you are talking about. 2 top-level BS drivers at SD were on 285/30-18 hoosiers on 18x8 SSR's, one of them placed 2nd in class. Another back east is running 285/30-18 kumho's on 18x8 SSR's, he took 1st at the Dixie NT. We tried the 285 hoosiers last year, they look weird when mounted but they launched great. I did not think they handled transitions well, but I may just needed to have learned to handle them differently, or the car setup may needed to have been adjusted for them.
I don't know about r-compounds, but I know when I'm running 255's vs. 235's (Street Tires) on 8" wide rims, the 235's feel much better. I may have more overall grip (especially in a straight line or steady-state cornering) on the wider tires, but the transitional feeling is worse.

On a course with fewer transitions, or on a car with a very smooth driver, the wider tire may in fact be the faster tire, but I would think that the sidewall flex issues of such big tires on narrow wheels would make it much harder for a non-expert driver to get as close to the limit as properly sized tires especially if there are a lot of slaloms or other elements that require spending a long time on dynamic tire loads.

When my current set of 255 615's are worn out, I'll either be going back to 235/40's (or 245/40's if I can find 'em) or going to wider rims and new 255's, depending on budget and closeness of competition. In the meantime, I'm going to do my best to drive smoothly to minimize the sidewall bounce from the big tires.

[Kevin M]

Scott, out of curiosity, how does running greter and lesser tire pressure in your over-width tires affect the lack of precise feel? Which is worse in terms of affecting your times?

[sperry]

Scott, out of curiosity, how does running greter and lesser tire pressure in your over-width tires affect the lack of precise feel? Which is worse in terms of affecting your times?
I've never played with tire pressure in terms of attempting to reduce the sidewall flex issue, so I don't know that I can specifically comment on that. Normally, if the event is warm enough to generate real heat in the tires, I adjust the front pressures to get a linear (if not even) I-M-O temp gradient. Then adjust the rears for handling purposes.

Running more pressure in the tires theoretically should lessen the transitional bounce, but I get the gut feeling that it would reduce overall grip under braking and steady state turning far more drastically than the benefits from "nicer" transitions. But I'm just guessing.

All I know is that over the years, I've found myself going lower and lower in my tire pressures and finding more and more grip. Going back to 50 psi in the tires seems like a step backwards.

[Kevin M]

I've never played with tire pressure in terms of attempting to reduce the sidewall flex issue, so I don't know that I can specifically comment on that. Normally, if the event is warm enough to generate real heat in the tires, I adjust the front pressures to get a linear (if not even) I-M-O temp gradient. Then adjust the rears for handling purposes.

Running more pressure in the tires theoretically should lessen the transitional bounce, but I get the gut feeling that it would reduce overall grip under braking and steady state turning far more drastically than the benefits from "nicer" transitions. But I'm just guessing.

All I know is that over the years, I've found myself going lower and lower in my tire pressures and finding more and more grip. Going back to 50 psi in the tires seems like a step backwards.

I would concur with all of your conjecture. Higher pressures "feel" better, but as I gain experience I find that feel and grip are not in the same place, and grip is more important.

[MattR]

I've had real good luck with 245-40 R compounds with my Advan A048, the car feels great on those. My hoosiers are the same size and I think they'll work out nicely. Maybe next season I'll try for 18's.

[tysonK]

I've had real good luck with 245-40 R compounds with my Advan A048, the car feels great on those. My hoosiers are the same size and I think they'll work out nicely. Maybe next season I'll try for 18's.

Speaking of the A048

I have been driving on these tires for about 32000 miles now and they are just about worn out. The dry handling is far superior to my stock tires but they really lack when there is heavy monsoon rain like we get here in Phoenix. Also these tires have very stiff sidewalls and are not very comfortable. I have to say that these tires are pretty good but my next tires will have to be higher performance to match my 1987 Beretta GT

[Dean]

Speaking of the A048OMG, that is teh funah. :lol:

[Kevin M]

That guy MUST be referring to the stock Advans...


plus, he is insane or thinks he's funny.

[sperry]

That guy MUST be referring to the stock Advans...


plus, he is insane or thinks he's funny.
Um, I think he's referring to whatever the stock tires are on an '87 Beretta GT.

http://www.beretta.net/model_info/images/87gtart.jpg

:lol:

[Kevin M]

I can't see anybody getting 32,000 miles out of A048s on a Lotus, let alone an Evo.

[sperry]

I can't see anybody getting 32,000 miles out of A048s on a Lotus, let alone an Evo.
What EVO, what Lotus? The review is from someone with a 1987 Beretta GT!