What Causes Severe Vibration When Braking a Car?
2 Answers
Severe vibration when braking a car can be caused by: 1. Tire deformation; 2. Improper tire dynamic balance; 3. Vehicle drivetrain malfunction; 4. Worn or loose ball joints or detached rubber bushings at connections; 5. Twisted or deformed drive shaft; 6. Uneven brake discs; 7. Overly loose or tight power steering belt. The brake is a mechanical braking device that slows down the vehicle, also known as a decelerator. The car's brake pedal is located below the steering wheel. Pressing the brake pedal activates the brake linkage, transmitting pressure to the brake shoes on the brake drum, which then clamp the brake rotor to decelerate or stop the vehicle. Brake maintenance tasks include: 1. High-temperature protection for brake pads; 2. Lubrication maintenance for brake calipers; 3. Cleaning of brake discs; 4. Replacement of brake fluid; 5. Rust prevention and lubrication for wheel bolts, brake discs, and contact surfaces with rims.
Last time I braked, the car shook violently. After checking at the repair shop, it was found that the brake disc was warped. The mechanic said this is usually caused by the brake disc overheating and then encountering cold water, such as washing the car immediately after driving on mountain roads or braking during rainy weather. When the brake disc is uneven, you can feel the steering wheel shaking when you apply the brakes. It could also be due to uneven wear of the brake pads, causing uneven force on the brake disc. Another possibility is an issue with wheel balance—if the balancing weights on the wheel hub fall off, it can cause similar symptoms. I later replaced the brake disc, and the problem was resolved. It's recommended to avoid prolonged continuous braking, reduce the number of sudden brakes, and regularly check the thickness of the brake pads and the smoothness of the brake disc surface.