Why Does the Car Brake Make a Harsh Sound?
2 Answers
There are several reasons why a car's brakes may produce a harsh sound: 1. Use of low-quality or overly hard brake pads: If the owner uses excessively hard brake discs or purchases low-quality brake pads, a harsh noise can be heard when braking. Additionally, poor-quality brake pads can also damage the brake discs. 2. Foreign objects between the brake pads and brake discs: When driving on complex road conditions, wheels can easily fling up stones or other foreign objects. If a stone gets lodged between the brake pads and brake discs, it can cause abnormal noises during braking. 3. Severe wear on the brake pads: If the brake discs are directly scratched by foreign objects or dented by impacts, the friction between the brake pads and the uneven brake discs will produce abnormal sounds. 4. Brake pad wear reaches the warning line, triggering an alarm: If the brake pads wear down to the warning line, an alarm sound will be emitted. 5. Loose brake shield: A loose brake shield can also produce harsh abnormal noises during braking.
That screeching noise from the brakes while driving really annoys me, especially during city traffic jams. I guess this mostly happens when the brake pads wear out – when the friction material gets thin, the metal directly rubs against the brake disc, causing that squeal. Another reason could be that the brake disc isn’t clean, with dust or small stones stuck on it, which makes noise when braking. I’ve noticed it happens more often in humid weather or after rain because the discs rust. I remember checking it myself last year and found a loose screw causing parts to shake; after fixing it, the noise disappeared. If ignored for too long, braking performance worsens, and it could even become a safety hazard. So, every time I hear it, I visit a repair shop – replacing parts early saves money and trouble, plus it extends the car’s lifespan. Rinsing the wheels more often during car washes also helps reduce dust buildup and prevent this issue.
