What Causes Car Brake Shaking at High Speeds?
2 Answers
Car brake shaking at high speeds is caused by uneven wear of the brake discs. The higher the speed, the more noticeable the shaking becomes. The maximum wear limit for brake discs is 2 millimeters. Once this limit is reached, the brake discs must be replaced. Continuing to use them beyond this limit will cause vibration during braking. Below are the standards for replacing brake pads: 1. Thickness: The normal thickness of brake pads is about 10mm. If it falls below 6mm, they should be replaced. 2. Sound: If the car frequently makes abnormal noises during braking, it indicates severe wear of the brake pads, and they should be replaced. 3. Pedal Feel: When brake pads are severely worn, their braking force decreases, resulting in a weak braking response. In such cases, the brake pads should be replaced promptly.
I've been driving for over a decade, and that high-speed brake shudder feels like the steering wheel is dancing. The main issue lies with the brake discs. After prolonged use, the brake discs warp due to heat, causing uneven surfaces, which leads to severe shaking when braking at high speeds. Uneven wear of brake pads or improper installation can also cause similar issues. This vibration is not only annoying but also affects handling, potentially leading to loss of control and accidents. During inspections, instruments are needed to measure the thickness and flatness of the brake discs. If the warping is significant, replacement is the only solution. Avoiding sudden braking and regular brake maintenance can help prevent this. Poor tire balance can also transmit vibrations, so it's recommended to check the suspension system annually to ensure safe and comfortable driving.
