I don't need an all-season tire for the M3, but if I did, no question this is going to be the one to buy. From what I've heard, the dry performance of this tire is equal to or better than some other high end summer tires (i.e. Conti DW for one). Michelin is basically creating a new class of tire -- extreme performance all-season -- it would appear. It's going to be interesting to see the test results.
2011.5 M3 sedan 6MT, Silverstone, no sunroof
2001 M5 LeMans Blue/Silverstone
2006 330i 6MT Red/black, ZSP, Nav, etc.
2001 Audi S4 6MT; 1996 Volvo 850R wagon