1. The brake makes a strange noise. When you step on the brake, the brake system will make a sharp metal friction sound. This may be caused by the thinning of the brake pads, the hollowing of the brake pads, the presence of foreign matters in the brake pads or the rust of the brake discs. Generally speaking, if you step on more feet, the abnormal noise will be relieved.

2、刹车踏板行程变长。直白点可以理解成刹车变软。刹车行程变长的原因主要是刹车系统中进入空气、缺少刹车油、可能存在泄漏、刹车片磨损严重等。

2. Brake pedal travel becomes longer. Straight white dots can be interpreted as brake softening. The main reasons for the longer brake stroke are air entering the brake system, lack of brake oil, possible leakage, serious wear of brake pads, etc.

3、刹车跑偏。刹车跑偏的现象不是很常见，主要体现在踩刹车时方向盘有明显的向一侧偏转。导致这种现象的原因可能是刹车片偏磨、刹车分泵有问题等。

3. The brake deviates. The phenomenon of brake deviation is not very common, mainly reflected in the obvious steering wheel deflection to one side when stepping on the brake. The causes of this phenomenon may be the eccentric wear of the brake pad and the problem of the brake cylinder.

4、刹车变硬。很多卡友会碰到刹车变硬的问题，刹车变硬的原因主要有真空助力器故障导致刹车无助力、频繁踩刹车后导致等造成。

4. The brakes have hardened. Many card friends will encounter the problem of brake hardening. The main reasons for brake hardening are vacuum booster failure leading to brake without power, frequent brake stepping and so on.

5、踩刹车时反弹。有不少卡友碰到过这种情况，在踩下刹车时刹车踏板有反弹顶脚的现象，这种现象多为刹车盘、刹车片表面不平、钢圈变形等导致。

5. Rebound on brake. Many card friends have encountered this kind of situation. When they step on the brake, the brake pedal rebounds. This phenomenon is mostly caused by the uneven surface of the brake disc and brake pad, and the deformation of the steel ring.