What Causes Brake Noise?

[Blanco]

The reasons for brake noise are: 1. Different hardness of brake discs leads to uneven wear; 2. Severe wear of brake pads results in direct metal-to-metal contact; 3. Foreign objects entering the friction disc causing noise when braking; 4. Improper installation of the brake system. Brakes are part of the vehicle's braking system and require regular maintenance. Maintenance intervals are typically based on the mileage or time recommended by the vehicle manufacturer, usually around 7,500km to 15,000km or 6 months, whichever comes first. Maintenance should be performed by professional technicians, with key tasks including cleaning, lubrication, tightening, and inspecting relevant braking and safety components.

[OJosephine]

I've been working in the auto repair field for many years and found that there are various reasons for brake noises. The most common one is when the brake pads wear down to their limit, the metal indicator will emit a sharp screech to remind you to replace them. Or, small stones or dust get stuck between the brake disc and pads, like sand grinding on a plate—a few hard brakes might clear it out. In humid weather or after rain, moisture can cause temporary friction noises, which usually go away after driving for a while. However, if the noise is persistent, sharp, or accompanied by vibration, you should suspect brake disc warping or loose lining. This issue shouldn't be delayed. I recommend checking the brake system thickness every 10,000 km—replace immediately if it's below the standard value. Avoid slamming the brakes in dusty areas as part of regular maintenance. This habit can save a lot of trouble and ensure driving safety.

[MacLuna]

I've been driving myself for over twenty years and have experienced brake noise on several occasions. That squeaking sound usually means the brake pads are worn and need replacement, or it could be some initial noise during the break-in period of a new car. The sound from moisture friction when starting up on rainy days is normal and typically disappears after driving for a couple of minutes. If the sound is sharp, harsh, and frequent, it might indicate foreign objects stuck in the brakes or damage to the brake discs, so extra caution is needed. I've developed a habit of regularly checking brake fluid and tires, performing maintenance every six months to detect potential issues early, saving money and ensuring peace of mind. This is especially crucial before long-distance drives.

[Lane]

When I first started driving, the screeching sound from the brakes really made me nervous. A friend told me that newly installed brake pads need time to break in, and the noise would lessen after a few hundred kilometers. Alternatively, dust or small debris might have accumulated on the brake discs, causing friction sounds, which could be resolved by gently applying the brakes a few times. A continuous high-pitched noise might indicate that the brake pads are completely worn out, requiring immediate inspection. Keeping the brake fluid topped up is also a useful tip, which helped me avoid embarrassing situations.