Why is there a strange noise when braking at low speed?
2 Answers
If there is a strange noise when braking at low speed, it may simply be that the new car is in the running-in period, or it could be caused by faults in the caliper, brake disc, or brake pads. Additionally, severe wear on the brake pads can also cause strange noises during low-speed braking. New brake pads and brake discs require a running-in process. When braking, if it happens to grind against a hard spot on the brake pad, this type of noise will occur. Moreover, if there are sand or gravel particles stuck between the brake pads and brake discs, this can also produce such noises. Another possibility is severe wear on the brake pads, in which case the noise serves as a reminder for the owner to replace the brake pads. As a consumable part of the vehicle, the frequency and habits of use vary among different owners, leading to different times for brake pad replacement.
I've been driving for over 20 years and have encountered too many cases of low-speed brake squealing. Common causes include sand, small stones, or metal shavings stuck in the brake pads, creating squeaking noises during friction. Rusty brake discs during rainy or humid weather can also cause noise. One winter, my old car made such a piercing screech when stopping at a traffic light that it startled people nearby. Upon inspection, the brake pad edges were severely worn with visible cracks - delaying replacement could lead to longer braking distances and accidents. After installing new brake pads, the noise usually disappears within a few days once they're properly bedded in. But older vehicles require regular thickness checks - if excessively worn, immediate replacement is necessary. I recommend visiting a trusted repair shop for rust and dust cleaning. Spending a little now prevents potential high-speed control loss. Avoid hard braking when possible, and weekly brake component rinsing during car washes helps too. Safety first - never delay maintenance.
