Probably going to buy an 06 M3 SMG tomorrow. I live in NYC and there are potholes everywhere. The car is fully loaded with every option except 19 inch wheels. I love the look of the 19s on the M3 but am concerned about wheel/tire damage when driving around the city. Any thoughts on 19s vs 18s? Also, does anyone know how much it would cost to put 19s (factory style) on an M3? Thanks everyone.