Wouldn't every time the pad goes by get damaged by the indents of the rotor!
lazz323,
Sep 22, 5:26am
I knew that's the answer but my head is like it might haha
bubbles244,
Sep 22, 2:43pm
it is intended to help prevent glazing of the pad surface.
thunderbolt,
Sep 22, 3:32pm
I always understood that they allow the hot gases clamped under the pad to escape quicker for a better bite onto the rotor.
sr2,
Nov 11, 4:41am
Correct, they are there to control gas build-up under the pads. I've only ever experienced gas build-up (no jokes about eating baked beans please!) under extreme racing conditions. Slotted rotors are of little practical use on a road car, although they do look good.
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