What Causes Car Brake Shaking at High Speed but Not at Low Speed?
2 Answers
1. Wheel rim deformation. Deformed wheel rims can cause uneven tire surfaces and wheel imbalance, leading to noticeable shaking during high-speed braking. 2. Abnormal tire wear or punctures can disrupt tire balance, resulting in brake shaking. 3. Half-shaft resonance. If the half-shaft or drive shaft becomes bent, it can disrupt the drive shaft's balance, causing resonance during braking, which is usually more noticeable at higher speeds. 4. Brake disc deformation. When brake pads come into contact with a deformed brake disc, the tires may shake. If your car experiences brake shaking at high speed but not at low speed, it is recommended that you immediately visit a 4S shop or repair facility for inspection and maintenance to avoid serious consequences. Now, do you understand what causes car brake shaking at high speed but not at low speed?
As a veteran driver with decades of experience, I believe that brake vibration at high speeds but not at low speeds is mainly caused by thermal deformation of the brake discs. At high speeds, the vehicle moves faster and the braking force is greater, generating frictional heat that raises the surface temperature of the brake discs. If they cool unevenly—such as after driving through a puddle and then braking hard—the disc surface can easily warp. At low speeds, the braking force is weaker and insufficient heat is generated, so the issue doesn’t manifest. This seriously affects braking balance, causing the steering wheel to vibrate and leading to unstable control or even dangerous skidding. From my experience, this situation is more likely to occur with frequent brake use, so it’s important to regularly check the thickness and flatness of the brake discs as a habit. If vibration is detected, promptly visit a repair shop for resurfacing or replacement—don’t wait until safety becomes an issue.
