Posts Tagged: rotor lateral runout

Brake Rotor Warp Myth: What Causes Brake Pedal Pulsation

Brake Rotor Warp Is a Myth: What Really Causes Brake Pedal Pulsation and Brake Judder Quick Summary Most drivers — and even many technicians — still believe that brake rotor warp is what causes brake pedal pulsation and brake judder. After decades of brake work and advanced diagnostics, I can tell you that’s usually wrong. In almost every street vehicle I’ve diagnosed, the real problem wasn’t a physically warped rotor at all. The real culprit was disc thickness variation (DTV) caused by rotor lateral runout, uneven pad deposits, improper lug … Read More