I have an '01 and am upgrading the wheels to 17" in front and 18" in back. I've been getting conflicting advice. I was originally going to go with 215/45/17 and 275/35/18. I was told a 265/35 would throw the heights off and the 275 is .96" taller than the fronts. But now I'm concerned that the contact areas are off and the slip angle will get screwy. So now I'm thinking of going with 215/40/17 and 265/35/18's (255's are not made in the tire I'm considering). But with this set up, I'm concerned the tire diameters are not compatible and how it will affect the TCS. Any help and comments would be appreciated on any combinations.