How to Solve Car Brake Noise?

[DiCamille]

Visit a professional auto repair shop as soon as possible for inspection to prevent further deterioration of the issue and reduce driving safety risks. Specific solutions for brake noise are as follows: 1. Once you notice abnormal noise during driving, promptly visit a professional auto repair shop for inspection to prevent further deterioration of the issue and reduce driving safety risks. 2. Maintain good driving habits. The braking process is essentially an energy conversion process; braking means energy consumption, and sudden braking consumes more energy and generates more heat. The substantial heat produced not only causes brake noise but also affects braking performance. 3. The car's brake friction pads are crucial safety components with a service life of 25,000 to 35,000 km. They should be regularly inspected during each maintenance service.

[PaigeLynn]

I've encountered the issue of squeaky brakes several times and would like to share my experience in dealing with it. The most common cause is when the brake pads are worn down to their limit, causing the metal wear indicator to rub against the brake disc and produce a sharp noise. In this case, you must replace the brake pads immediately. If the newly replaced brake pads still squeak, it might be due to insufficient lubrication during installation, leading to poor caliper retraction. Additionally, in winter when temperatures are low or after rain, frost or rust may form on the brake disc surface, causing noise when you first apply the brakes. This usually goes away after a few more applications to wear it off. If the problem persists, it could be due to a warped brake disc or deep grooves, which require professional resurfacing by a mechanic. It's also important to avoid frequent hard braking in daily driving, as overheating the brake pads can make them more prone to squeaking.

[LeFrank]

During the last maintenance, the mechanic told me that there are only a few common causes for brake noise. First, check the thickness of the brake pads—if it's below 3mm, they should generally be replaced, otherwise the warning shim will start scraping the rotor. Second, inspect the surface of the brake discs; severe scratches or warping can cause noise, in which case the discs may need resurfacing or outright replacement. Another possibility is the material of the brake pads—those with higher metal content tend to squeak, and switching to ceramic-based pads usually solves the issue. Additionally, he reminded me that rust on the brake discs after washing the car or during rainy days is normal, and the noise typically disappears after driving a couple of kilometers. None of these situations should be a major concern.

[LeoFitz]

I've noticed that brake noise is quite time-sensitive. It's most common during cold starts, especially in autumn and winter, when metal contracts in the cold, increasing the gap between brake pads and calipers. The noise usually disappears after driving 2-3 kilometers when the car warms up. Brakes also tend to squeak when decelerating to a near-stop, as the low wheel rotation speed causes insufficient friction. After rain, when brake discs rust, the first couple of brake applications often produce a creaking sound, which is normal. However, if the noise persists daily and is more noticeable during turns, it might be necessary to check the caliper guide pins, as they're likely lacking lubrication. Remember, regular maintenance of the braking system is crucial.