What are the factory wheel and tire sizes for the E46 M3?
The standard E46 M3 wheel is an 18-inch M Double Spoke II cast-alloy design with a Satin Chrome finish. These measure 8×18-inches in the front and 9×18-inches in the rear, with 225/45ZR18 and 255/40ZR18 tires (respectively). Forged 19-inch M Double Spoke II wheels (also in a Satin Chrome finish) were offered as an option in most markets. These measure 8×19-inch in front and 9.5×19-inch in the rear, with 225/40ZR19 and 255/35ZR19 tires (respectively). A cross-spoke cast-alloy wheel (in identical 8×19-inch/9.5×19-inch sizes) was fitted to M3 ZCP and M3 CS models. Finally, the M3 CSL was offered with either the regular 19-inch forged M Double Spoke II wheel or a unique cross-spoke design (similar but not identical to that of the M3 ZCP and M3 CS), measuring 8.5×19-inches in front and 9.5×19-inches in the back. These were always paired to track-ready Michelin Pilot Sport Cup tires, sized 235/35ZR19 (front) and 265/30ZR19 (rear).