Cars running at low speeds, lightly braking on the brakes, and not stepping on the brakes, the reason is very complicated, not only will happen in the new car new film, but also in the old car, which will happen on the newly replaced brake pads. It also happens on brake pads that have been used for a while. There is no comprehensive and accurate answer to this phenomenon. Today we will talk about some practical cases. Whether it works well or not according to the condition of the disease, you can observe the test in practice.