What Causes Brake Noise?
2 Answers
The reasons for brake noise are as follows: 1. Brake Pads: If inferior or overly hard brake pads are used, they will produce noise when rubbing against the brake disc during braking. Always use high-quality brake pads when replacing them. Sand or foreign objects between the brake pads and the brake disc can also cause noise. 2. Brake Disc: Abnormal wear of the brake disc. If the brake disc is excessively worn, it will also produce noise during braking. 3. Brake Light Switch Return Spring: If there is a slight squeaking sound at the pedal position when lightly pressing the brake while the vehicle is stationary, this is mostly the squeaking sound from the brake light switch return spring on the brake pedal.
Over the years of driving, I've encountered brake noises several times, mainly due to worn-out brake pads grinding against the metal backing plate, causing squeaking sounds, especially noticeable during frequent braking in city traffic jams. Additionally, rust on the discs after rain can temporarily cause noise, and sometimes the calipers sticking without timely retraction lead to continuous friction. I remember that one time I neglected to replace the pads promptly, which resulted in scoring the discs and unnecessary extra expenses. Regularly checking the thickness every 20,000 kilometers and using professional tools to measure the disc's flatness can prevent such issues. Safe driving is paramount; if you hear any noise, don't delay—head to a repair shop immediately for inspection, as it could affect braking distance or even lead to accidents. Overall maintenance is key; using better-quality brake pads and lubricants can extend their lifespan.
