Common questions about the brake disc are as follows:

1, the brake disc rust, especially after the rain, two days did not drive, and then drive, see the brake disc rust, this is a normal phenomenon. Because the brake disc is made of cast iron, it will rust when encountered with water. In addition, it is a friction part, and it can not be treated with rust prevention. When we brake, rust will be worn off without special treatment.

I haven't driven for a few days, and when I start driving again, the back of my car makes a "bang" noise. This is also between the brake pad and the disc rust, and the hand brake cable, the hand brake return spring rust caused by rust, the hand brake piece did not return in time due to rust, starting led to forced return, sound, also without special treatment.

2, left and right wheel brake pad wear is not uniform. This situation need to see the wear difference is how much, under normal circumstances, is not the same, a slight difference, multipoint side grinding pads, while less, because the brake force distribution also is not very uniform, especially with interference of electronic equipment, such as ESP, EBD, so are not huge, is normal. If there is a big difference between the two sides, one side of the grinding to the limit, the other side and half, it is a fault, the most likely is the brake sub-pump back bad.

3. Abnormal sound of brake. The phenomenon is more common, abnormal sound first check whether the brake pad wear to the limit, if normal, you can not take care of it, you can also grind the brake pad, may be the brake pad grinding to hard metal particles, or there is a foreign body.