Originally Posted by
BCRider
On motorcycles a grabby disc is a sure sign of a kink or warp in the rotor or a thickness variation that in some way tries to wedge the pads apart moreso than the other portions.
That makes sense. Banzai, you may just have a defective rotor. Just curious, but why are you running Shimano rotors with Avid brake calipers? My BB7's came complete with Avid rotors.