Question: Should there be any dampening products applied to the back of disc brake pads?

Answer: A number of "dampening" chemicals were used for older vehicles that had the consistency of adhesives and were designed for pads that did not use shims. That means there are virtually no applications on today’s vehicles that need these chemicals. If used on pads with shims, they may actually cause the shim to come off the pad, creating shim migration issues. A light coat of high quality non-petroleum based brake lube can be put on the piston faces and caliper-to-pad contact areas to reduce noise without restricting movement.