When you begin to notice a pulsating brake pedal, most likely your rotors are warped and in need of resurfacing. Did you visually inspect the rotor before you did the pad swap?ColumbusDrift wrote:2. I just replaced my rear rotors and rear pads because they really needed it, but am now experiencing pulsating when I brake. Is this due to warped rotors? Or maybe a cause of a locked up parking brake? I used all new parts from Napa.