What Causes Severe Vibration When Braking a Car?

[VonAvery]

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.

[MarcusFitz]

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.

[OHenry]

Brake vibration is a quite common issue, and I've personally experienced it before. In my case, it turned out to be warped front brake discs caused by prolonged usage. The mechanic said if the brake discs still had sufficient thickness, they could be resurfaced, but if too thin, replacement would be necessary. Additionally, poor-quality brake pads can also cause vibration - some inferior pads have uneven material composition which creates vibrations when rubbing against the discs. I've also encountered wheel hub deformation causing brake vibration, where impacts had warped the hub, making the entire wheel wobble during braking. Regular inspection of these components is crucial, especially after long-distance driving or mountain routes, as the braking system directly impacts driving safety.

[OEva]

I have a deep understanding of car brake vibration. The common causes are, first of all, issues with the brake discs, which can easily become deformed after prolonged use, causing vibration when braking. Secondly, poor condition of the brake pads, severe wear, or hard spots can also cause this. Tire-related issues should not be overlooked either, as imbalance or wheel hub deformation can similarly lead to brake vibration. There are also situations where the chassis suspension system is at fault, such as loose steering tie rods. These problems all require actual inspection to confirm. It's important to pay attention to the braking condition while driving, and if vibration is noticed, it's best to visit a repair shop early.