Why Does Braking Make Noise?
2 Answers
There are several reasons why braking may produce noise: 1. Use of low-quality or overly hard brake pads: If low-quality or excessively hard brake pads are used, they may produce a squeaking sound when they rub against the brake disc during braking. Therefore, it is essential to use high-quality brake pads when replacing them. 2. Presence of sand or foreign objects between the brake pad and brake disc: During normal driving, it is inevitable to pass through some complex road conditions. Due to the unique design of disc brakes, some sand or foreign objects may get between the brake pad and brake disc, causing abnormal noises during braking. 3. Severe wear of the brake disc: The use of low-quality brake pads or the presence of hard foreign objects between the brake pad and brake disc can lead to abnormal wear of the brake disc. If the brake disc is severely worn, it may also produce a squeaking sound when braking. 4. Brake pad warning: Many people are unaware of how many kilometers brake pads should be replaced. In fact, there is no mandatory rule on the mileage for replacement; they should be replaced once they become thin. Some brake pads have electronic warnings, while some low-end cars use warning indicators. If the wear level of the brake pads reaches the warning line, a squeaking warning sound will be emitted, indicating that they should be replaced promptly.
When I press the brake pedal, the noise is usually caused by friction between the brake pads and the disc. Especially in humid weather, the disc surface can rust, resulting in a squeaking sound when braking, which will disappear after driving for a while. Additionally, severely worn brake pads or harder pad materials can also produce a similar screeching sound, reminding me that they need to be replaced. Dust or small stones stuck in between are also common issues, which can be resolved with a simple cleaning. I recommend regularly inspecting the brake system to avoid safety hazards. After all, if the noise is too loud or persistent, it's best to get it fixed immediately—don’t wait until it affects braking performance.
