Thread: Autocross Tires
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Old 2003-02-13, 08:59 AM   #35
sperry
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Real Name: Scott
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Car: '09 OBXT, '02 WRX, '96 Miata
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Quote:
Originally Posted by ArthurS
Thanks. I looked over tirerack and saw 2 different types through Kumho. These are the 2:

215/45YR17 Kumho Ecsta MX In Stock $117.00 $468.00

215/45WR17 Kumho ECSTA Supra 712 In Stock $87.00 $348.00

Should I spend the extra 30$ per wheel? Also, someone told me that 215-45-17's for a wagon and 225-45-17's for sedans. Is this true? Thanks again for the help.
The MX line is brand new for this year, so I don't know how good they'll be. They're prolly pretty good since a lot of people are considering them for STX class autocross tires. However, that might mean they'll be too soft for long time street use, and you'll find yourself replacing them every year... so I don't really know.

I'm really pleased with my 712's... for the price they've got a lot of performance, a lot of tread-life, and are pretty quiet, even in a wider 225 size. Perhaps all that's true of the MXs too, with even more performance... if so, I'll prolly get some for my next set of tires... but I'm waiting for some reviews 1st. You should get 'em and let me know...

Since the wagon doesn't have the flared fenders like the sedan, it's a little harder to cram the wider rubber in there. IIRC Kuhmos are actually pretty narrow compared to the contact patch width, which is good. I'm pretty sure 225 Kuhmo's will fit on a wagon w/ stock suspension... but if you're going to hook up the lowering springs, I'm not sure what that does. You should ask around the NASIOC suspension forum... I'm sure there's someone one there that'll know first-hand about 225 Kuhmos, SDRs and springs.
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