Oh ok, now I see where you were going with that. So not only are they better, but I get a free TomTom. Haha.
And as for the tread wear: ironically it is both front and rear, but the driver side is worse, because I abuse my tires getting on the freeway from Robb drive

Also, when I got an alignment last, the people at Big O (?) by Safeway on Mae Anne and McCarran said that they can't adjust the rear camber without an alignment kit, which I didn't have money for at the time. I don't remember what the specs of my alignment were at the moment, but it was pretty neg all the way around. The front slightly less than the rear tho. I wanna say -.8ish up front, -1.2 rear? They could check the rear, but not adjust it? Also seems weird that I could mess it up installing springs, but they can't fix it the way I messed it up?