What Causes Squeaking When Braking?
2 Answers
Brake squeaking may be caused by worn brake pads, which should be replaced promptly. Below is some information about brake pads: 1. Brake pads are consumable items: During vehicle use, brake pads gradually wear thinner. When the friction layer is nearly depleted, an alarm device—a metal limit tab on the edge of the brake pad—will scrape against the brake disc, producing a sharp metallic friction sound as a warning to remind the driver to replace the brake pads. 2. Brake pad composition: Typically made up of a steel plate, adhesive heat insulation layer, and friction block. The steel plate is coated to prevent rust, and the coating process is monitored using an SMT-4 furnace temperature tracker to ensure temperature distribution quality during coating.
When I first started driving, I also encountered brake noise and thought it was a minor issue, so I ignored it. Later, I realized it could be due to severely worn brake pads or foreign objects stuck in them. Once after driving in the rain, my brakes made a screeching sound, and upon inspection, I found that the brake discs had rusted and accumulated some dirt, requiring cleaning or grinding. Another possibility is improper installation, such as loose fixing screws causing friction noise. Brake system maintenance should never be neglected. During regular car washes, you can simply check the thickness of the brake pads—replace them immediately if they're too thin. Don’t delay like I did until the noise became louder, almost affecting braking performance. Safety comes first. Always perform a self-check before and after long trips to ensure a smooth journey.
