It It really depends on your offset and the tire itself. Not all 225s are actually 225 mm and the width of the tire at the sidewalls is wider. However, working with a zero offsetit should clear the OEM suspension unless for some odd reason your camber is positive and you could possibly have to roll the seam on the inside of the rear fender. We just switched to 16x8 +0 w/ 255-50-16 Hankook Z214s from 17x7 -47 w 50mm spacer adapters (essentially a +3mm offset) and 225-45-17 BFG Rivals (which is about the same diameter of ur 225-50-16). We are using stock spring perches w S.T. springs and had no rubbing on the suspension w/ either setup. The 17" setup rubbed the lip in the rear on big bumps so we rolled the lip and that solved it. In order to get the 255s to fit we had to install the puck style spring rubbers (2 on each corner) which stiffened the car up a lot and keeps the tire from contacting the fender by preventing compression. Its a nice setup for autocross and we can pull the spring rubbers fairly easily and swap to the 17s for a fairly compliant street ride.