good video as a point of reference on what kind of surface rotor temperature you would see at big power track with long straights and hard breaking zones. temps get easily into 800-900C that is 1472-1650 F by the end of braking zones:

Stock AP1 Honda S2000 with JRZ dampers, 245 NT-01 tires, and Cobalt XR1/XR2 pads. No aero. No power steering.
Front: 0" toe, -2.2 degrees camber, 625 lb/in spring rate (WR = 320 lb/in)
Rear: 1/8" toe-in, -3.4 degrees camber, 550 lb/in spring rate (WR = 250 lb/in)