Why Does the Car Brake Make Noise?
2 Answers
Car brake noise occurs due to issues in the braking system, such as worn brake pads becoming too thin, causing the brake drum to directly contact the vehicle. The friction between metal parts then produces noise. When the brake pads are thin, a warning indicator will light up, prompting immediate inspection. If the brake pads are found to be in good condition after inspection, the car can continue to be driven normally. For new cars, since both the brake pads and brake discs are brand new, they are in a break-in period. This can lead to unusual noises while driving. Owners need not worry about such noises as they will automatically disappear after the car has passed the break-in period.
When I first bought a car, I was also startled by the brake noise. Later I learned that such screeching sounds are mostly minor issues. It's often caused by hard metal particles on the edges of brake pads or sand grains stuck on the brake discs. Especially after driving in the rain, the rust on the brake disc surface can cause squeaking, which disappears after a few rubs. What needs attention is that when brake pads wear down to the warning metal piece, it can also produce metallic friction sounds, which is a signal to replace the pads. If it's newly replaced brake pads, some noise during the break-in period is normal. However, if there's a clunking sound every time you brake, it might be that the brake caliper is stuck, and you should get it checked immediately.
