What Causes Abnormal Braking Noises in Cars?
2 Answers
Reasons and solutions for abnormal braking noises upon startup: 1. New car or recently replaced brake pads producing noise: This usually occurs because the brake pads and discs are brand new and haven't gone through the break-in period, resulting in unusual sounds. Solution: If the noise disappears after some use, it's considered normal. 2. Foreign objects between brake pads and discs causing noise: While driving, sand particles may get lodged between the brake pads and discs, sometimes creating friction noise. Solution: Simply remove the foreign objects from the braking system. 3. Low temperature causing braking noise: Low-frequency noise when braking during cold starts. Due to low temperatures, rubber components in the chassis suspension become stiff and may vibrate with the frame, causing low-frequency noise from the brake calipers or suspension system. Solution: Drive for a while until the vehicle warms up. 4. Loose or aged suspension/chassis components causing braking noise: Missing or damaged brake disc mounting screws can also cause noise. Loose or worn components like shock absorber mounting screws, stabilizer bar rubber bushings, or ball joints may produce braking noise while driving. Solution: Regular inspection and replacement. 5. Brake disc corrosion causing noise: Vehicle brake discs and pads may corrode due to water exposure or prolonged parking, especially after extended handbrake use, causing adhesion between discs and pads that produces initial noise. Solution: Inspect and replace brake discs. 6. Severely worn brake pads/discs causing abnormal noise: Brake pads typically have wear indicators. When pads wear to their limit, the indicator rubs against the disc creating noise. Worn brake discs may produce noise due to surface contamination, uneven material density, excessive operating temperatures, or improper installation torque. Solution: Inspect and replace brake pads or discs.
I drive quite frequently, and strange brake noises are quite common, usually due to several reasons. The most likely causes include worn-out brake pads or newly replaced pads that haven't been properly broken in, resulting in squeaking when pressed. Another reason could be rust or uneven scratches on the brake discs, causing a harsh grinding noise. Sometimes, small stones or dirt can get stuck, leading to creaking sounds. I recommend first checking the thickness of the brake pads; if they're below 3mm, it's time to replace them. Wet weather can also make the noise more noticeable. Don't underestimate this issue—delaying repairs can damage the discs, leading to costly and time-consuming fixes. Regularly inspecting brake components during maintenance can save money and ensure safety.
