Reasons for Brake Disc Noise
2 Answers
Brake disc noise is generally caused by insufficient tension in the brake return spring, excessively hard brake pad material, or the brake pads being installed too close to the brake disc. Here are some introductions about brakes: 1. Currently, there are disc brakes and drum brakes. Many older vehicles often feature front disc and rear drum configurations. 2. Many modern vehicles use disc brakes on both front and rear wheels because disc brakes have better heat dissipation than drum brakes. During high-speed braking, they are less prone to thermal fade, resulting in better high-speed braking performance. 3. Disc brakes have inferior braking performance compared to drum brakes during low-speed cold braking, and they are more expensive than drum brakes.
I've also encountered brake disc noise issues while driving before. The most common causes are rust or moisture buildup on the brake discs. Especially after rainy days, a thin layer of rust easily forms on the disc surface, creating sharp squealing sounds when braking. Another factor is brake pad material quality - low-quality hard pads or those containing foreign objects like small stones/sand can cause persistent noise. From my experience, occasional light squeaking is normal, but if it squeals every time you brake, it's time to check pad thickness - worn-out pads need replacement to avoid safety risks. Additionally, prolonged parking in damp areas accelerates corrosion. Ensuring wheel hubs are dry after car washes helps prevent this. In short, timely maintenance is key to avoiding driving discomfort.
