Why does the vehicle vibrate when braking

Brake tremor is a type of vibration that is felt through the steering wheel, brake pedal, and suspension during high-speed braking. The vibration can range from mild to severe. Brake jitter can be caused by a variety of reasons, including rotor damage, caliper failure, or new brake pads that have not been properly run-in after replacement.
Feeling the source of the tremor allows you to understand whether the front brake or the rear brake is responsible for the tremor. The vibration felt through the steering wheel is usually caused by a problem with the front rotor, and a malfunction of the rear rotor can cause the vibration felt on the brake pedal.
Possible reasons for vibration:
1. Uneven brake rotor. When the rotor wears unevenly, the brake pads will only contact the rotor in certain areas, which will cause vibration, usually during high-speed braking.
2. The brake pads are in poor condition. Worn, damaged or warped brake pads may cause vibration and squeaking noise, indicating that the brake pads need to be replaced. Similarly, brake pads soiled by dust, oil, or other toxins can cause vibration when trying to grasp the rotor.
3. A vehicle that is not aligned will brake jitter when the brake pedal is stepped on. Misaligned vehicles can also cause premature tire wear and damage to important suspension components. If vibration and shaking occur during normal braking during a turn, there may be a problem with your suspension system.
Solution suggestion:
1. Ask a professional to check your car, so that you can know if you need to replace the brake parts, or compare your car to help you eliminate jitter and vibration during braking.
2. Replace a new set of brake pads. If the old brake pads are seriously worn out, causing the brake disc surface to become mottled, it is recommended to replace the brake discs together. (Note that replacing the brake discs and brake pads at the same time can effectively avoid the noise, jitter and long running-in period caused by the old and new discs)

How to avoid brake jitter
When braking, intense heat is generated due to the violent friction of the disc. Over time, excessive heat will damage the braking system. But sometimes poor driving habits and excessive use of the brake system can also lead to excessive heat generation.
A driver who goes from the speed of light to the speed of light and brakes suddenly may wear the brakes faster than the average driver. Although the brake is designed to withstand extreme temperatures and be able to cool down between uses, frequent use does not allow proper cooling to occur, which ultimately results in the brake pedal feeling soft, called brake decay.
Brake decay will reduce the pressure in the braking system, which is essential for stopping the vehicle. Similarly, excessive use of the front brake may cause burn marks on the rotor, accompanied by a rather unpleasant odor, resulting in permanent damage and requiring replacement.

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