What Causes Vehicle Body Shaking When Braking?
3 Answers
The reasons for vehicle body shaking when braking are: 1. Uneven brake disc surface with excessive radial runout; 2. Significant deviation in wheel alignment data, incorrect front wheel alignment angles, or excessive toe-in; 3. Tire pressure being too high or too low; 4. Abnormal tire wear or deformation of the tire rim. Methods for braking under different driving conditions: 1. When the brake pedal is abnormal, use engine braking and shift to a lower gear; 2. In heavy traffic, press the brake pedal gently; 3. On rainy or muddy roads, lightly press the brake pedal repeatedly; 4. In emergency situations, firmly press the brake pedal immediately, then release it slowly, followed by repeatedly pressing and releasing the brake pedal gently.
I have extensive driving experience and have encountered the issue of car body shaking when braking several times. The most common cause is warped or uneven brake rotors, which create uneven contact with the brake pads during high-temperature braking, leading to body vibration. Once during a long trip, I felt the entire car shaking when braking, and it turned out the brake rotors had overheated and warped. Additionally, uneven brake pad wear, insufficient or contaminated brake fluid, or wheel imbalance can also cause shaking. For example, incorrect ABS system response may indirectly contribute to this issue. I recommend paying attention to unusual brake noises or shaking signals regularly, checking tires and the braking system periodically, and visiting a repair shop for a comprehensive diagnosis to replace worn parts promptly. Driving safety is a matter of life and death—don’t take it lightly. Developing good maintenance habits can prevent major repairs.
As an auto enthusiast who loves tinkering with cars, brake shudder requires delving into mechanical principles. The core issue lies in force imbalance within the braking system, often caused by uneven wear of brake rotors; when the rotor surface develops grooves or irregularities, inconsistent braking friction induces vehicle vibration. Contaminated brake fluid with lowered boiling points can vaporize during emergency stops, creating shudder. Wheel imbalance or unstable suspension support may amplify vibrations, while malfunctioning ABS systems can trigger additional judder. Simple checks involve inspecting rotor smoothness, while advanced diagnostics may require wheel balancing tests. Prompt repairs prevent accelerated tire wear and brake failure, with optimal solutions including replacement components like new brake rotors to maintain performance.
