Why Do My Brakes Pulsate When Stopping?

By Staff WriterLast Updated Apr 7, 2020 3:08:37 AM ET

An uneven rotor surface is the most common cause of pulsation that drivers feel in their brake pedal while braking. Tomorrow's Technician explains that the surface of brake rotors, sometimes called brake discs, should not vary any more than 0.001 inches around the entire rotor. This means that even the slightest variation in the surface of a rotor or disc is felt by drivers when braking.