Contour Enthusiasts Group Archives Forums Modifications Suspension shaking under braking

The pads aren't supposed to be removing heat from the rotors, that's the rotor's job. Yes, heat does transfer from rotor to pad but that's not the likely cause of your "warping".

UNderstand that almost all "warped" rotors aren't warped at all, but they do have DTV (Disc Thickness Variation) due to hard spots that turn into high spots. Hard spots can come from [censored] material but they can also come from uneven pad material deposits on the rotor, to the point that friction varies from place to place around the rotor. More friction = more heat and it can be enough to cause localized changes in the material of the rotor. There's the hard spots. Those hard spots are self-perpetuating to the point that they cause DTV and then brake pulsing.

Turning a rotor rarely removes the hard spots. It just levels them...temporarily. They will return.

To avoid this issue otherwise known as "warping", you MUST season the rotors properly and you MUST bed the pads in properly so they don't smear or leave uneven deposits of material.