Thanks, that's what I figured. I also just spent a good chunk of change getting all 4 rims straightened. Maddening since I bought it as a CPO, and I guarantee they were that way when it was sold to me by BMW. 3 of them were horribly bent (shop showed me on the lift). I think I'll stick with the 17's and wait until I upgrade the suspension to upgrade to 18's. Also, I'm in Boston so the 17's should offer a bit more durability with these lunar surface roads.