i had 225's all around on stock wheels, with and without my h&r springs, and have 225's with my 18" wheels and have no rub in the rear. You need to bash some extra metal back there with a hammer...but with the stock wheels i was not rubbing regardless.

1999 Silver Frost SVT #609 of 2760 Quaife, lightened SVT Flywheel, SPEC stage II clutch, removed resonator, k&n drop in - various other goodies too.