Rear Brake Hanging Pic

[rboe]

Not cheap, but if you will refer back to my pictures you'll see that the disc is ground flat on one side (the inside surface) but the side you see on the outside surface is raised above the plane that the bolts attach to. Looking at it edge wise, it is not symmetrical. THAT, I think is what warps it (at least contributes to it). I suspect, but have no proof, that one of the disc pads sees more pressure (and hence develops more heat) so maybe the assymmetrical heat production causes or contributes to the warping.

My Quota discs were flat on both sides and warped. Big thick car rotors will/can warp. So, "big shoulder shrug", not sure just what the heck is going on! Other than heat is bad.