i took my new (3000mile) car to a track day at barber this weekend. three 30 min sessions sat and 4 sunday. now it seems my front rotors are severely warped. is this too be expected? also the rear diff over heated (220degrees) and i think i hear a new noise in the rear end. the way they advertised the car with nurenburing(sorry about the spelling) i didnt expect anything but chewed up tires