What Causes the Abnormal Noise When Braking a Small Car?
2 Answers
Small car brake noise is caused by incomplete retraction of the brake pads. Here are the relevant explanations: 1. If the retraction is incomplete, it will cause continuous friction between the brake pads and the brake disc, resulting in abnormal noise. In this case, it is necessary to check the brake caliper and make adjustments. 2. The brake system is related to the driving stability and safety of the car. The car's brake system consists of a vacuum booster, master cylinder, wheel cylinder, brake pads, and brake disc. 3. When the driver presses the brake pedal, the master cylinder will push the wheel cylinder through the brake fluid, allowing the wheel cylinder to push the brake pads to clamp the brake disc, thereby slowing down the car.
When I drive my car and encounter brake noise, it's really annoying. Usually, the main cause is worn brake pads, where the surface becomes thin or develops hard spots, causing squealing during friction. Rusty brake discs are also common, making a clunking sound when pressed after rain, especially if parked in damp places for long. Foreign objects like small stones or metal debris stuck inside can also cause uneven friction and strange noises. Newly replaced brake pads may take a few days to break in, and some noise is normal. But if the noise persists or is sharp, it could indicate loose calipers or damaged brake pad brackets. If not repaired promptly, braking distance may increase, raising the risk of accidents. Once, my car had this issue, and after enduring it for a few days, the brakes failed, nearly causing an accident. It was only resolved after replacing the entire set of brake pads. I recommend getting a professional inspection immediately if brake noise occurs—don’t skimp on small costs. Regular cleaning of the undercarriage and avoiding sudden braking can help prevent it.
