I know that BMW brake pads are notorious for dusting. Does anyone have any experience with after-market pads that don't dust (or not as much)? I remember when I switched to carbon-kevlar pads for my CRX autocrosser, I had no dusting problem and no extra wear on the rotors (of course the car was driven rarely, but under extremely high stress conditions). Would composite type after-market pads be bad for the Bimmer stock rotors? TIA