The rotor thickness on the Wilwoods I have here are 1.125 VS 1.25 for the Baer track set up. The .125 difference is not the major contributor to the weight loss. The weight loss is in the aluminum hat, and lighter caliper. The 6 piston calipers from Wilwood are lighter then the single piston Baer. The track calipers and brackets are bricks.
I have driven the hell out of cars with Wilwood street brakes, with no warping or heat issues. No, I have not had them on a road coarse for 12 hours, but I doubt anyone else here will either. i have however made 150 to 0 stops inside of a 1/4 mile repeadily, and I am a notorius fast driver and late braker on the street. I can warp some brakes, done to stockers plenty.
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