the passenger front brake is making a metal to metal rubing sound as if the brake senser is hitting the rotor but its not. When I pulled the calaper off the brake pads had a crack running down the center of the pad and the brake pad also had pits in it . Thats all i could find that could be making that sound has any one had this happen befor and will changing the pads be the anwser or is it something more to it.....? oh yea i also checked the barrings just in case and there good...