Posts Tagged: Car vibrates when braking
Common Causes of Brake Pulsation and Judder
Debunking the Myth of Warped Rotors: Brake Pulsation Explained As someone who has spent decades diagnosing brake problems, I can tell you firsthand that when a driver complains their car shakes when braking or their brake pedal pulses, the knee-jerk explanation of warped rotors is almost always wrong. What’s really happening is a condition called disc thickness variation (DTV), caused by lateral runout. Yet, the myth of warped brake rotors persists—even among professional technicians. Why the “Warped Rotors” Story Doesn’t Hold Up The idea that brake rotors warp under heat … Read More
Car shakes when braking — The most common causes
Why Your Car Shakes When Braking (And How I Fix It Permanently) Quick Summary If your car shakes when braking, the problem is almost always due to rotor thickness variation, also known as disc thickness variation (DTV). Lateral runout, NOT warped rotors, is what causes DTV. In other words, the brake rotor isn’t sitting perfectly parallel with the wheel hub or steering knuckle, causing it to rotate in a wobble. All it takes is .003″ or more of lateral runout to cause this problem. In almost every case I diagnose, … Read More