What Causes Squeaky Brake Noises?
2 Answers
Reasons for squeaky brake noises: 1. Break-in period for new vehicles, where brake pad bedding is an important process. It typically takes several hundred kilometers of driving before the brakes feel smoother; 2. Tiny sand particles may get between the brake pads and rotors during driving, sometimes causing noise due to friction. This doesn't require repair - just drive until the particles fall out; 3. Missing or damaged brake rotor mounting screws can also cause brake noise, or there might be a brake system malfunction requiring inspection and repair; 4. Rusty brake rotors - prolonged exposure to weather may cause rust formation. Stepping on the brakes several times will usually wear off the rust layer.
After driving for so many years, I often hear squeaking brake noises. The most common cause is severely worn brake pads—when the metal wear indicator contacts the brake disc, it produces a harsh screeching sound. Additionally, dust or small stones trapped between the pads and discs can also cause squeaking, especially during dusty summers or after rain when moisture causes rust on the pads. Sometimes, uneven brake discs can also lead to issues. These sounds are annoying, but more importantly, they indicate safety risks, as overly thin pads reduce braking efficiency, making it harder to stop the car. It's best not to delay—check the pad thickness yourself first. If it's close to the wear limit, visit a professional repair shop to replace the pads or adjust the system. Regularly cleaning the brake components can also help prevent such problems.
