Why is there a screeching sound when braking?

[LaLeo]

Braking with a screeching sound is usually because the brake pads are nearing their thickness limit, thus emitting an "alarm" sound. Here is some relevant knowledge about brake pads: 1. Definition of brake pads: Automobile brake pads, also known as automobile brake linings, refer to the friction materials fixed on the brake drum or brake disc that rotates with the wheel. The friction lining and friction block within them bear external pressure, generating friction to slow down the vehicle. 2. Composition of brake pads: Automobile brake pads are generally composed of steel plates, bonded heat insulation layers, and friction blocks. The steel plates are coated to prevent rust, and the coating process is monitored using an SMT-4 furnace temperature tracker to ensure the temperature distribution during the coating process for quality assurance.

[GabrielleLee]

Last time I heard that screeching sound when braking, it really startled me. Turned out the brake pads were almost worn out. As someone who often drives in the city, I've encountered this situation several times. Mostly it's caused by dust or small stones stuck on the brake pads, creating metal-on-metal friction that produces screaming noises. I could even feel the steering wheel vibrating, which really affects the driving mood. If left untreated, it accelerates brake disc wear and costs more money. I suggest going to the garage for inspection as soon as possible - just replacing the pads won't take much time, don't compromise safety. When doing self-inspection, you can pop the hood to check if there's dust accumulation on brake components, but it's better not to tamper with professional equipment. Develop the habit of lightly applying brakes to warm up the discs after driving in rain - this can reduce the probability of abnormal noises and make driving smoother.

[VanHannah]

Having driven for over 20 years, I've found that screeching brakes are usually caused by uneven brake disc surfaces or rust spots, especially after rainy days or prolonged parking. When braking, the pads rub against those rough spots, creating annoying noises that also affect handling. My routine is to gently apply the brakes a few times at low speed in an empty space after starting the car - sometimes this grinds off surface rust and quiets things down temporarily. But don't expect a permanent fix; you'll need a mechanic to resurface the discs with professional equipment. Ignoring this issue increases stopping distances and raises rear-end collision risks - definitely not worth it. I recommend monthly checks on brake pad thickness and replacing them when worn. Newer cars with improved materials have fewer noise issues, but older vehicles require more frequent maintenance. After all, proper brake care means safer driving.

[AshlynMarie]

Every morning when I drop my kids off at school, there's that screeching sound whenever I hit the brakes, making my palms sweat. It's usually caused by water or mud on the brake pad surface. That high-pitched squeal not only disturbs the kids but could also indicate aging parts that might fail. I need to address it promptly because persistent noise means reduced braking efficiency and higher accident risks. A quick fix I've tried is driving a short distance after washing the car to evaporate moisture – sometimes it works. But if the noise continues, absolutely get a mechanic to check it immediately. Maintaining cleanliness while driving matters, and choosing high-quality brake pads reduces such issues. After replacing mine once, the noise decreased significantly – totally worth it for family safety.