What causes the abnormal noise after braking?
3 Answers
The reasons for abnormal noise after braking are: 1. Metal hard spots on brake pads: Small metal particles on the brake pads can produce a sharp noise when braking. Try slamming the brakes a few times or sanding/replacing the brake pads; 2. Severely worn brake discs: After prolonged use, deep grooves may form on the brake discs where the pads make contact, causing noise during braking; 3. Small stones or water film between the brake disc and pad: If driving on gravel roads, in sandy conditions, or right after washing the car, check for and remove any small stones or press the brakes several times to eliminate the water film.
When I hear strange noises after braking, I usually wonder if the brake pads are worn out. At this point, the sound is like a sharp squeak, reminding you that it's time to replace the parts. On rainy days with lots of water, the brake discs may rust and temporarily make noise, but it usually disappears after driving for a few minutes. Dust getting stuck in the gaps can also cause noise. Newly replaced brake pads might produce sounds for a few days during the break-in period, which isn’t a major issue. However, ignoring it for a long time can worsen braking performance. For example, once my car made noise for half a month, and the disc surface got scratched, making repairs much more expensive. Safety is the top priority—whenever you hear unusual noises, it’s best to take your car to a professional shop for inspection without delay. Regular maintenance of the brake system, such as checking pad thickness and cleaning the wheel hub area every six months, can significantly reduce the chances of such problems occurring.
After braking, there is a noise issue. I learned from car enthusiast discussions to first perform a simple self-test to identify whether the noise is coming from the front or rear wheels, then press the brake pedal a few more times to check for patterns. If the noise occurs right after washing the car, driving a few more times might help as the dust could clear away. However, if the noise persists, it should be taken seriously as it might indicate worn-out brake pads or signs of wear. I’ve also encountered cases where uneven brake rotors caused noise, and addressing it promptly can prevent further damage to parts, saving a lot of money. Safety comes first—don’t wait for major issues to arise. Unusual noises often signal potential risks. It’s recommended to regularly inspect brake components to detect abnormalities early, as every drive involves our safety.
