I installed these pads on two new AC Delco rotors. As a result, the braking on my 2010 F150 was smoother and better than what the car originally had. The only downside is that the anti-squeak pad came loose from one of the pads. Reconnected and installed with no problems. It's a tight fit between the pad and the caliper body, so there shouldn't be any problems. I recommend these pads for a great braking system.