Quote:
Originally Posted by sweetbmxrider
I'm not sure what you guys are talking about but I've definitely dealt with warped rotors before. As scott said, throw a rotor in question on a lathe and see how true it is.
I prefer napa rotors and adaptive one pads. They are a little on the dusty side but quiet as can be.
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What I have been led to believe is that the rotor itself does not "warp", that it runs out of true because of uneven pad transfer. If you mic the rotor and it comes out uneven it's not that the rotor itself lost its shape, it's that the pad material did not cross to the rotor evenly.
Stoptech says this, and a dude who used to run the brake dyno at Raybestos (i.e. running a rotor/flywheel up to high rpms and then slamming on the "brakes") said the same.