Ok here's the deal, lately i've been going to this mountain pass, and my re92's which are balding on the outsides don't cut it any more.. Now i can get new tires, but I really want new rims for my car, especially the advan rg. I don't have a problem getting the 17x7.5, but the 18x7.5 look complete to my on a wrx.. like a perfect fit. Are the 18''s like really bad for track/auto-x and mountain racing? Well are the advan rg's really bad, in terms of lateral weight distribution, the rim weight, size, offset, etc.. Help me out if you guys can, the 18''s are just an idea.. If their a big problem for racing then I'll probably just stick wit the 17x7.5..