Why is there a noise when you don’t step on the brakes?

There is abnormal sound when driving at low speed without stepping on the brakes. It may be because there are fine sand grains entering the middle of the plate and disc, and sometimes there is abnormal sound due to friction. In this case, no maintenance is required. Run for a while and the small sand grains will fall off. Come out just fine.

　　

If there is abnormal sound when the vehicle brakes, there are usually the following situations: One of the factors is that the new car itself has a running-in period. In general, because some new cars have a relatively long inventory period and the brake discs of the car It is very easy to rust and there are rust spots, so if you step on the brakes during the running-in process of the vehicle, there will be abnormal noises, but usually after more than 200 kilometers of running-in, the abnormal noises will not be obvious , and it will be more powerful when braking. The second reason is that the master worker did not apply sound-absorbing paste or chamfer to the friction plate when replacing the new friction plate. In this case, the new brake disc cannot have a good contact with the friction plate Run-in, it will cause abnormal noise. The third reason is that when the vehicle passes through wading roads or muddy roads, hard foreign objects enter the gap between the brake pads and the brake discs. In this way, when the brake system is working, it will be stuck, and when the foreign matter runs into the gap of the brake disc, there will be abnormal brake noise.