What are the factors that cause abnormal noise when braking at low speeds?
1 Answers
There are two possible factors that may cause abnormal noise when braking at low speeds: 1. The brake pads have worn to their limit, causing the small metal plate to come into contact with the brake disc. Normally, there is a certain distance between this small metal plate and the brake disc, preventing friction. However, when the brake pads wear down to the limit, the small metal plate contacts the brake disc, and the friction between metal surfaces produces a squeaking sound, alerting the driver to replace the brake pads immediately. Therefore, if there is noise, promptly check the brake pads. 2. The brake pads contain relatively large metal particles, and the noise generated from friction with the brake disc is also due to metal-to-metal contact. This issue has occurred in many vehicles. To eliminate the abnormal noise, the brake pads must be removed and polished. Using sandpaper to grind off a layer of the brake pads will remove the exposed metal particles, preventing further noise.