What are the reasons for the screeching sound when braking?

[VanMariana]

The reasons for the screeching sound when braking are: 1. Rust on the brake disc or brake pads; 2. The brake pads are new; 3. Excessive wear on the brake disc and brake pads; 4. The brake pads are installed incorrectly or are of the wrong model; 5. Use of low-quality or overly hard brake pads; 6. Abnormal brake caliper or lack of brake fluid; 7. Foreign objects between the brake drum or disc and the pads. Solutions for the screeching sound when braking: 1. Apply butter or specialized lubricant at the connection between the brake pads and the brake caliper; 2. Regularly inspect and replace the brake pads; 3. Regularly adjust the brakes; 4. Avoid frequent use of the brakes.

[MacDavid]

Last week while driving, I also encountered a screeching sound from the brakes. After taking it to the repair shop for inspection, I found out it was because the brake pads had worn too thin. The mechanic said that when they get too thin, the metal parts directly rub against the brake disc, causing that squeaking noise. This might be due to my frequent braking in the city, which accelerated the wear. Another possible reason could be dust or small stones stuck in the gaps on the brake disc surface, leading to abnormal friction. If ignored and not repaired, the braking performance would deteriorate, increasing the risk of accidents. I spent some money to replace the pads, and the noise disappeared. I recommend regularly checking the thickness of the brake pads and getting maintenance every 10,000 to 20,000 kilometers to prevent small issues from turning into big problems. Don’t wait until a major accident happens to regret it.

[DiHadley]

It's common to hear noises from the brakes in the garage, usually due to aging brake pad materials or uneven surfaces. When the material wears down, if the pads become too thin or develop hard spots, they can produce high-frequency sounds during friction. Sometimes, dust accumulation or lack of lubrication can also cause this. The solution is to remove, clean, or replace the components. Car owners should avoid attempting repairs themselves to prevent system damage; it's best to have a professional shop inspect the brakes. Ignoring these issues can lead to longer braking distances, especially on wet or slippery roads, increasing the danger. During maintenance, check the thickness every six months to keep the brakes in optimal condition.

[Hall]

When I first bought the car, I heard a screeching sound every time I braked, which scared me into thinking the car was about to break down. I asked a few friends, and they said it might be dust or small stones stuck between the brake pads, causing abnormal friction. Another common reason is driving in the rain or on muddy roads, where the mud dries and hardens. I tried lightly grinding the brake discs or using a cleaner, and the noise reduced somewhat. However, I still recommend that new drivers regularly check their brake components to prevent severe wear and tear.

[VonBeckett]

Don't ignore screeching brakes—it's a serious safety warning. The cause is often worn-out brake pads or surface corrosion/rust. If the pads are too thin, metal-on-metal contact can directly damage the braking system, risking failure. Once on the highway, I heard the noise but delayed action, nearly resulting in brake failure. Drive to a repair shop immediately for inspection and part replacement. Proper maintenance prevents such issues, ensuring driving safety.

[StConnor]

To reduce brake squealing, start with prevention. I make it a habit to check brake pad thickness every six months, replacing them if they're too thin. Causes include material aging, dust accumulation, or improper installation. After driving in high-humidity areas, I perform simple cleaning of brake components to prevent rust-induced noises. I recommend owners develop cleaning routines, using specialized sprays to remove buildup and maintain system efficiency.