well, i only meant as far as looks. for example, my gf got the optional 17" wheels on her c230. she's running 16" wheels on there right now for the winter, and i actually think they look better.

it's just my opinion, of course, and i think i'm one of the few, but huge wheels still don't do it for me, unless it's an all out race car. but ok, i'll give him that. 17" is passable. and evidently he does auto X. i definitely wouldn't do 18".