What are the reasons for new car brake noise?
4 Answers
Reasons for new car brake noise: The brake discs and pads of a new car are all new and need to be worn in, which can cause abnormal noises during braking. These noises can be categorized as vibration friction or sharp squealing sounds, and they usually disappear after driving a few hundred kilometers. During the break-in period, it is generally recommended not to drive too fast, with speeds below 100 km/h being ideal. Additionally, it is advisable to drive on various road conditions during the break-in period, such as highways, to allow the new car's components to adapt to different driving conditions. In windy weather, dust from the air may enter the brake pads, which can also cause brake noise. The solution in this case is to firmly press the brake pedal several times. Brake pads play a crucial role in the braking system and are an important component of the car's braking mechanism. Therefore, brake pads should be inspected and replaced regularly, and after replacing them twice, the brake discs should also be replaced once to prevent brake failure.
I've driven many new cars, and brake noise is quite common. The main reason is that the brake pads and rotors are still in the break-in period, with surfaces not yet smooth and fully mated. The noise usually disappears after a few hundred kilometers. Another factor is overly hard brake pad material, especially during cold starts, which can produce harsh friction sounds. During new car assembly, dust or small stones may get trapped, causing friction noise. A few hard brake applications can help expel foreign objects. If the noise persists or worsens in rainy conditions, have the brake system inspected immediately, as neglect may lead to abnormal wear on pads and rotors. I recommend having the dealership thoroughly inspect all brake components during the first maintenance service to ensure proper installation and cleanliness. As a driver, I emphasize safety first—don't let noise compromise your driving focus.
When I first bought my car, the brakes were always squeaking. After consulting a technician, I learned there are various reasons. For example, new brake pads and discs have an anti-rust coating that can cause noise during initial friction. It could also be due to oil stains or dirt during installation, which stops after cleaning. Another possibility is the brake caliper screws not being fully tightened, leading to loosening and noise after some driving. In such cases, there's no need to rush to replace parts; normal driving for about a week usually resolves it. If there's a lot of dust on city roads, debris kicked up by the wheels can get stuck in the brake gaps and cause noise. Cleaning the brake area with a high-pressure water gun during car washing can solve this. In short, there's no need to worry excessively about brake noise during the break-in period of a new car, but if it persists, it should be addressed early.
New car brake squeaking is mostly normal. Common causes include: new brake pads and rotors needing break-in, where surface bumps create friction noise. Brake pads containing hard metal particles may squeak in cold or damp conditions. Residual moisture after car washes or rain causes rust, leading to brief noises upon starting. Sand particles entering during installation or misaligned plastic components can also cause sounds. I advise owners not to panic, as most issues resolve after driving a few kilometers. If accompanied by increased stopping distance or brake pedal vibration, professional inspection is needed. Keeping brakes clean is key to prevention.
