Join Date: Mar 2012
SixPack is offline
Re: Brake pads grinding on rotor..
I will revive this old thread. Someone may find it helpful.
I had a squeaking on both front brakes after I installed new pads. I checked the pins, replaced the O-rings and lubed them with no change. It sounded just like the pad wear indicators were rubbing the rotors on my new pads.
I replaced the rotors and pads with Raybestos ceramic pads and rotors and the noise was gone. I do not think the brand or type of rotors and pads makes any difference in this case.
The problem was that the previous Bendix ceramic pads were 1/4" wider than the AC Delco pads that were on the vehicle. The Bendix pads were braking on 1/4" portion of the unused surfaces of the AC Delco rotors.
Make sure new pads match the width of the wear pattern on the old rotors. It would be best to replace your old rotors with new rotors or at least have your old rotors resurfaced every time you replace the pads. Obviously, the run out of the rotors should be checked, but also, the contact pattern on the new pads and old rotors should be checked and the pattern must match.