What Causes Vibration When Applying the Brakes in a Car?

2 Answers
LeEloise
07/23/25 11:25pm
The reason for car shaking when braking is: uneven wear of the brake discs. The solution is to replace the brake discs or simply resurface them. Methods for maintaining brake discs include: 1. Develop good driving habits; 2. Avoid sudden braking; 3. Regularly inspect brake pads and discs; 4. Check the thickness of the friction pads; 5. Have a professional inspect the brake shoes; 6. When replacing, use brake pads and discs provided by the original equipment manufacturer. The functions of the brakes are as follows: 1. Brakes are used to reduce speed or bring the vehicle to a stop, working on the principle of friction between the brake pads and drums, as well as between the tires and the road. 2. They convert the kinetic energy of the moving vehicle into heat energy through friction, thereby slowing down or stopping the car.
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StSilas
08/10/25 7:19pm
As someone who works with cars all day, vibrations when braking are mostly caused by warped brake rotors. After prolonged driving, especially during highway speeds or frequent braking in traffic jams, high temperatures can cause the rotor surface to warp, making the wheels shake when you hit the brakes. Another common reason is uneven wear on the brake pads—some areas wear faster than others, creating an imbalance when pressure is applied. If the calipers are dirty or worn out, they can also distribute force unevenly. Additionally, the ABS system causes pulsed vibrations during hard braking, which is usually normal. But if vibrations occur during normal braking, it's time to inspect the hardware. Suspension issues, like worn-out shock absorbers, can also indirectly cause vibrations. After driving, feel the wheel hubs—if they're scalding hot, the risk of warping is high. Regularly check brake pad thickness and rotor surface smoothness, and replace them if warped. Don’t ignore it—vibrations can damage other components. Taking the car to a professional shop for inspection is the easiest solution.
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