i have the tire rack winter setup for our M if your interested. I got a bbk and they wont clear my fronts so i need to sell. let me know if you want i can send you pics.
F10 M5: 11.546 127.41 with a 1.938 60ft Street Tires
E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires