I had the same problem after a few track days the first time I encountered the problem I shaved my rotors. After doing another track day the problem came back. I thought it was the pad and bought new pads didn't fix the problem. Turned out I warped my rotors instead of replacing it with oem rotor I bought the 2 piece DBA's and haven't had any brake issues since and I've 2 track days on them track temp over 100 F. I think those of us that track in hot weather our oem rotors deal with high temp very poorly IMO.
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