Abnormal Noise When Braking?
3 Answers
Abnormal noise when braking can be caused by issues with the brake pads, brake discs, or the brake system. Here are the reasons for the abnormal noise: 1. The rubber ring is not installed properly or has aged, causing noise. Replace or reinstall the rubber ring. 2. Noise caused by newly replaced brake pads is normal. The noise will disappear after the break-in period. 3. Tiny sand particles have entered between the brake pads and brake discs. Simply remove the foreign objects to solve the problem. Missing or damaged fixing screws for the brake discs can also cause noise. Reinstall the fixing screws. 4. If the car has been parked for a long time, rust may form on the brake discs, leading to noise when braking. This is normal. Just drive safely for a while to wear off the surface rust, and the noise will disappear.
When I hear unusual noises while braking, I immediately become alert. This often indicates that the brake pads are severely worn or have reached their limit. When the friction material is almost gone, it can produce a squeaking sound, which can easily lead to longer braking distances or even failure in emergencies—extremely dangerous. Other common causes, such as rust on the brake discs or debris like small stones or sand, can also trigger sharp noises and weaken braking performance. I once experienced a situation where the discs rusted after driving in the rain, resulting in a screeching sound. If left unaddressed, the discs can get damaged. Safety should never be compromised, so I recommend visiting a repair shop as soon as you notice any unusual noise. Technicians will check brake fluid pressure and pad thickness, quickly replacing any faulty components—your life depends on it. Regular maintenance can prevent such issues, such as inspecting the brake system every 5,000 kilometers.
When encountering brake noise, I instinctively think of maintenance issues, usually caused by worn brake pads or improper installation. This serves as a reminder that it's time to replace them. Delaying the replacement can damage the calipers or even the entire system, increasing repair costs. Under normal operation, brake pads should be checked for thickness every 10,000 to 20,000 kilometers. You can roughly observe them by shining a flashlight into the wheel hub gap. It's best to visit a professional shop for a comprehensive diagnosis using specialized tools, such as checking if the rotor is warped or if there are foreign objects embedded. Choosing ceramic brake pads results in less noise and longer lifespan, while reducing sudden braking habits can also slow down wear.
