Why Does the New Car's Brake Squeak?
3 Answers
The reasons for the new car's brake squeaking are: 1. Severe wear of the brake disc; 2. Brake pad warning; 3. Use of inferior or overly hard brake pads; 4. Presence of sand or foreign objects between the brake pad and brake disc. Brake pads are generally composed of a steel plate, an adhesive heat insulation layer, and a friction block. The steel plate is coated to prevent rust, and the coating process is monitored using an SMT4 furnace temperature tracker to ensure the temperature distribution during the coating process meets quality standards. The steps for replacing brake pads are: 1. Release the handbrake and loosen the hub screws of the wheel that needs brake replacement; 2. Remove the tire to expose the brake caliper and brake disc; 3. Hang the brake caliper with a rope and remove the old brake pads; 4. Lift the hood and unscrew the cover of the brake fluid reservoir; 5. Align and embed the new brake pads, placing the inner pad with the wear indicator on the inside; 6. Reinstall the brake caliper and tighten the caliper screws to the required position.
When I bought my new car, the brakes also squeaked, but it stopped after a week or two of driving. New brake pads come with a thin coating or residual adhesive from the factory, which takes a few hundred kilometers to wear off completely; it's more noticeable in humid or rainy weather because moisture increases friction. Don’t worry too much; just drive normally and lightly brake a few times after accelerating on highways to speed up the break-in. If the noise persists for a month or the brakes feel soft or unresponsive, you should visit the 4S shop to check if the brake discs are warped or if there’s any debris stuck. During the break-in period of a new car, it’s not just the brakes—the engine and transmission also need time to adapt. Safety comes first, so don’t neglect regular maintenance.
As a car enthusiast, squeaky brakes on a new car are common. The surface of new brake pads may be rough or there could be fine dust on the disc; residual water droplets after washing the car can also trigger noise. A simple solution is to drive a bit faster in a safe area and then gently apply the brakes repeatedly about ten times to remove surface impurities. The noise tends to be less noticeable at higher temperatures; it's louder during cold starts, which is normal. If there's no improvement after two weeks or if the noise is accompanied by vibration, it might indicate improper installation or mismatched brake discs and pads. In such cases, promptly consult a professional to check brake fluid pressure and wheel hub tightness to prevent failure. Avoid blindly replacing parts, as original equipment manufacturer (OEM) components need time to break in and adapt.
