Hello all was wondering if anyone had the same issue. I installed new centric rotors on the front and hawk hps pads on both axels. Had rear rotors inspected and they are good. Around 75mph and up major vibration occurs. What could it be or did I do something wrong this is the first brake job on the car and it has only 32k on it. Before doing the brake job I had pulsation but only during stopping now at high speeds.