Thread: After market brake rotors

Okay, so I got new ceramic pads since the old were getting critically worn. After install, the front brakes have a nasty scraping noise upon moderate to hard braking. Ideally I would have replaced the rotors,(which I still might do) but time was against me. In the past I put on new pads(not ceramic)without machining rotors and they set in just fine. Is this characteristic of ceramic pads when breaking in? Yes, the front rotors are slightly grooved, rear are still pretty flat. Can I still use the pads with new rotors after driving for awhile with the old? Or am I causing any damage while braking under this condition?