1. Abnormal noise when braking
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.
Longer brake pedal travel
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.
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.
The brakes harden
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.
When you step on the brake, many card friends have encountered this situation. When you step on the brake, the brake pedal rebounds and kicks. This phenomenon is mostly caused by the uneven surface of the brake disc and brake pad, and the deformation of the steel ring.
In a word, there are many problems in the brake system. When there are problems, don't be afraid of medical advice. It's better to do a simple initial investigation to confirm whether the problem is serious, whether you can continue to drive to the repair shop, and never ignore the brake safety, because it is related to the safety of everyone.