Originally Posted by PandT
Interested in a technical way, rate of change causing warpage in rotors...
Race cars? Do they change them after every race?
Sorry, I was thinking one thing and typing another. Rate is part of it but the bigger part is "delta T" or the total change in temperature. In the race environment, the brakes usually fluctuate between hot and very hot, never getting a chance to completely cool off like they can on a personal vehicle going down the highway getting ready to exit and come to a complete stop from highway speeds. Going from winter time cold to very hot at the bottom of an exit ramp is a prime way to warp some rotors. That is why I mentioned the preheat technique.