Tirerack.com recommends a 225/40/18 tire. Gimme a call sometime, I havent heard from you in forever bro.
i think you can fit up to 245's on the rim but you would probably run into rubbing issues. if your car is lowered i would only go 225's...
so no go on 235/40 ? i ran into an sti with 235/40-18 and it was slammed, he said he had no rubbing issues. (my god im never getting these wheels put on!)