my 325 is eating the back tires MUCH faster than the front set.. I never really "burn rubber" and I can count on 1 hand how many times I have, and it's never really much. both tires are wearing about the same , all the way across.. does it have anything to do with negative Camber on the back wheels?? I have Continental sport contacts on it with 235/40/17 tires. I put them on in January and have driven approx 12,000 miles on them. The fronts have acceptable wear. Overall I have never had complaints with the tires.. I know no Z rated tire is going to perform well in the rain, so I dont expect much from it there, but dam, does it come to putting on new tires every year?