Why Does the Brake Pad Make Noise When Braking?
1 Answers
The reasons for brake pad noise during braking are as follows: 1. Rust on the brake caliper. If the brake fluid is not replaced for a long time, it will deteriorate, and the water in the fluid can cause the caliper to rust, leading to friction and abnormal noise. 2. Slow return of the master brake cylinder. Abnormal return of the brake caliper can also cause noise from the brake pads. 3. Break-in period for new cars. The brake pads and brake discs of a new car are in a brand-new state and still in the break-in period, which may produce some noise—this is normal. 4. Presence of foreign objects between the brake pad and brake disc. While driving, foreign objects like sand or gravel can get lodged between the brake pad and disc, causing noise during braking. 5. Hard brake pad material. Original brake pads are often made of semi-metallic materials, which can easily produce noise when rubbing against the brake disc. 6. Improper installation of the brake system. During installation, if the spacing between the brake pad and disc or the tightness of the nuts is not adjusted properly, it can lead to noise. 7. Noise during reverse braking. Since brakes mostly operate while the vehicle is moving forward, prolonged wear in one direction can create burrs on the reverse side. Engaging the brake in reverse causes these burrs to rub against the disc, producing noise.
