|
Did you read the link, or just read the title? I quote the fourth paragraph:
"and an untold number of discs with pad material unevenly deposited on the friction surfaces - sometimes visible and more often not.
In fact every case of "warped brake disc" that I have investigated, whether on a racing car or a street car, has turned out to be friction pad material transferred unevenly to the surface of the disc.* This uneven deposition results in thickness variation (TV) or run-out due to hot spotting that occurred at elevated temperatures.
Read the link. Basically, uneven pad deposits lead to certain PARTS of the rotor turning into cementite, and other parts being regular metal. It then wears unevenly. I could keep going...but.. just read the page. It's all on there.
- Rob
|