I did two track events with a total of 20-25 laps, the Z has about 3000 miles on it and the front rotors are shot and brake pads are to the metal. The front brakes got so damn hot they discolored the center of the wheels....total junk components. My 911 has a whole year of track events on stock rotors and Hawk pads without any problems. Took the car to the dealer, roughly $475 for new 02 pads all around and turn all rotors. They will not cover anything with warrenty including the wheels. Really ruined my day... I guess if you want to play with the big boys you gotta pay! Oh yea, dealer is going to lower the car roughly 1.25" I think that is all I can get away with so the tires will not rub in hard g turns.