Squeaky Brake Pads in Volkswagen
2 Answers
Volkswagen's squeaky brakes are usually caused by light contact between the brake pads and the brake disc, where the pressure is not strong enough, resulting in friction between the pads and the disc, producing a trembling sound from the brake pads. Principle of Car Braking: Disc brakes, also known as caliper brakes, operate by using a hydraulic pump to push the brake caliper to grip the brake disc. The braking force of disc brakes differs from that of drum brakes, being more linear and not suddenly increasing. To enhance braking force, methods such as increasing the braking area are commonly used, like employing dual-piston calipers to expand the contact surface. Alternatively, lengthening the brake lever or amplifying hydraulic pump pressure can also increase the pressure. Maintenance of Car Brake Systems: Replacing Brake Pads: The braking performance of a car ultimately depends on the condition of the brake pads, so maintaining the brake pads in good condition is the most direct method of brake system maintenance. Brake pads and discs (or drums) have a limited lifespan and must be replaced once they wear down to a certain extent. Under normal urban driving conditions, their lifespan is approximately 50,000 kilometers, and it's best to inspect them every 10,000 kilometers. Regular Brake Fluid Replacement: Brake fluid is another critical component affecting the brake system, besides the brake pads. The key to maintaining brake fluid is ensuring it doesn't deteriorate, particularly by preventing moisture ingress. Brake fluid should be replaced every 50,000 kilometers, or more frequently if driving in humid conditions. Brake Adjustment: If the car noticeably pulls to the left or right when braking, this is due to asynchronous front-wheel braking, which can easily lead to accidents, especially at high speeds. Immediate adjustment at a repair shop is necessary.
My Volkswagen Golf has been running for two years, and recently the brake pads keep squeaking, which is quite annoying. There could be several reasons for this. For example, the brake pads might be worn out and almost gone, causing the thin layer to scrape against the disc and produce a screeching sound. Or there could be dust or small stones stuck on the brake disc, making noise when driving, and rust can also form when there's too much rain. As the car owner who commutes to work every day, if I encounter this situation, I should first check how much thickness is left on the brake pads—measure it with a ruler. If it's below 3mm, replace them immediately. Regularly cleaning the brake system and spraying some brake cleaner can help remove rust and dirt, reducing noise. Volkswagen’s brake pads are made of harder material, which inherently makes them more prone to noise. Driving habits also matter—avoid sudden braking and operate gently to extend their lifespan. If you notice any unusual noise, don’t delay; address it as soon as possible to avoid bigger, more expensive, and dangerous repairs later.
