Skylarking
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Your pads lay down material into the rotor during the bedding in process which allows the brakes to work at their maximum efficiency.
So if your new pads are the same compound as the old pads, and the rotor is running true without thickness variations or gouges, then there is no real need to lightly skim the rotor. Still, I always run some emery cloth over the rotor to remove any glaze.
But if your rotors are gouged or have a large lip or you use different pad material, I’d skim the rotors as little as possible before measuring them up. Then if they are at or below minimum thickness, I’d replace them, or if above minimum then also run some emery cloth over the rotor face.
@hademall, I think pad slapped means just pulled old pads out and put new pads in (as you see at Bathurst).
So if your new pads are the same compound as the old pads, and the rotor is running true without thickness variations or gouges, then there is no real need to lightly skim the rotor. Still, I always run some emery cloth over the rotor to remove any glaze.
But if your rotors are gouged or have a large lip or you use different pad material, I’d skim the rotors as little as possible before measuring them up. Then if they are at or below minimum thickness, I’d replace them, or if above minimum then also run some emery cloth over the rotor face.
@hademall, I think pad slapped means just pulled old pads out and put new pads in (as you see at Bathurst).