255 is fairly square on a 9 inch wide rim and Michellins run wide. Where is it you are rubbing? If it's where the rear fender meets the bumper you can just trim that.
2006 BMW 325i Titanium Silver
Mods- 19" AG M310's hypersilver, drilled and slotted rotors, OEM rear spoiler, OEM exhaust tips, corner delete mod, carbon fiber wrapped trim, Viper 5904 Alarm + remote start
Audio upgrades- Alpine S920HD, JL XD600/6, Jehnert XE200, Morel Hybrid Ovation II, Audioque 2200D, 2 Alpine SWR 12d4's (forward facing sealed from trunk)