What causes shaking and vibration when stepping on the car brakes?
2 Answers
Reasons for shaking and vibration when stepping on the car brakes: 1. Problems with the brake pads and brake discs; 2. Severe unilateral wear of the brake disc; 3. Poor return of the brake pump. Compared to brake pads, brake discs wear out more slowly, and repair shops generally recommend replacing brake pads and brake fluid. After a certain period of use, brake discs may wear out, leading to uneven surfaces or thickness that does not meet standards, which can severely affect braking performance over time. Braking, also known as deceleration, refers to the action of stopping or reducing the speed of running locomotives, vehicles, and other transportation tools or machinery. The general principle of braking involves fixing a wheel or disc on the high-speed shaft of the machine and installing corresponding brake shoes, bands, or discs on the machine base to generate braking torque under external force.
Brake pedal shaking is mostly caused by issues with the brake discs or brake pads. A common scenario is brake disc deformation due to overheating—for example, after aggressive driving followed by emergency braking, which leads to excessive temperature and uneven cooling, resulting in an uneven surface that causes vibrations. Uneven wear of brake pads or contamination with oil and dust can also cause shaking, especially after prolonged frequent braking in urban traffic congestion. Another possibility is loose components in the suspension system, such as faulty bearings or shock absorbers, which can affect the entire braking system. If this happens, it's best not to delay—take the car to a professional repair shop immediately for inspection and repair. After all, brakes are critical for safe driving, and a small issue can escalate into a major problem. From my driving experience, regular brake system inspections can effectively prevent such issues and keep the vehicle in good condition.
