I have 225/50/16 toyo RA-1's on 16x7 (et55 i THINK) RL7's I have not competed on them yet, but run 3mm spacers to clear the rear shock body. i only use the spacers in the rear, and do not know how i will do by way of fender clearance when it gets warm enough to try them out. FWIW i'm on stock springs and struts, and run 215/45/17 on an ET53 17x7 wheel daily in the summer and have zero rubbing issues, no spacers. my car is a MY01 coupe