[PaulE]

One other thing at the track. If you are a student, like me, you may be having a debrief session with your instructor while still sitting in your car parked in the pits. It is very important to not have your foot on the brake pedal during this time. Holding pressure on the brake pedal with the pads stationary while the brakes are hot is definitely going to transfer some pad material to the disks and "warp" your rotors. If you can't stop at a level spot in the pits, you're better off shutting off the car and leaving it in first gear. Don't use the parking brake for the same reason, the parking brake shoes can get stuck to the inside of the disk hats.