目前使用的桑塔纳、捷达等高速轿车多为前轮驱动，大都采用盘式制动器。由于这种制动器的制动力较后轮大，摩擦片磨损快，在使用与维护中用户只注意分泵漏油与否，而对摩擦片需不需要换和制动拖滞现象不太重视。其原因主要是认为盘式制动器具有自动调整间隙功能，其回位不可能 Currently used Santana, Jetta and other high-speed cars mostly front-wheel drive, mostly with disc brakes. Because of this brake braking force larger than the rear wheel, friction plate wear fast, in the use and maintenance of the user only pay attention to the sub-oil spill or not, while the friction plate does not need to change and brake drag phenomenon less attention. The main reason is that the disc brake with automatic adjustment of the gap function, the return is impossible