Originally Posted by lucid
If you get on your brake pedal to stop the car and sit on the brakes or something after a session, then I guess you could warp the rotors since you might be affecting how the rotor cools and contracts.
This is why I never use the hand brake after sessions and I confirm it is a drum-based system independant on rear wheel.
I usually leave the car in gear on a flat surface and move it half a wheel after 10-15 minutes to avoid all the heat going only on one side of the discs. Cooling laps are important but not always easy on open sessions with a lot of cars.
Also Lucid, as you mentionned, it is incredible that the BMW technician speaks only about wrapped discs and no word about pad's depot. I am now facing 2 opinions about the same problem and I don't want to have trouble with my dealership.