i'm running a 16 rs unlimited rim, just like a subzero, i'm running 225/60/16 Z rated Falken ziex, i'd recommend those for everyone they grip well at the track and street and i've even done well at autocross with them, and i daily drive with them..if ur running a 15 inch, i'd go 195 or 205 with a 50-60 series Z or Y rated...falken is the best but w/e u can afford..