There is no fixed cycle for the replacement of brake pads. If you go to 4S shop for maintenance, the staff will say that it is irresponsible to change the brake pads this time without checking. Only when the oil and filter elements on the vehicle have a fixed replacement cycle, all other items need to be checked to determine whether to replace. Today we are going to talk about brake pads. Most people change their mileage between 30,000 and 80,000 kilometers, and the number of kilometers is quite different. The more the brake pedal is changed, the less the high-speed pedal is, the later the change is. However, it also has something to do with the material of the brake pads. Some types of brake pads are replaced earlier, which is caused by the too soft brake pads.
If the vehicle is not self-maintenance, go to 4S shop or repair factory, then let the technician check the thickness of the brake pad for each maintenance. If the forecast is not enough to drive to the next maintenance, it should be replaced. If the car is maintained by itself, how can I check it? Also look at the number of kilometres first, if the number of kilometres is very small, less than 30,000 kilometres, you can take a look at it, with a flashlight, you can see the thickness of the brake pads. If more than 30,000 kilometers, it's better to check carefully. The way is to take the tire down and see at a glance. Each wheel brake pad has two pieces, one outside and one inside. If you only look at it with a flashlight from outside, you can only see the one outside. Most of the brake pads inside and outside the car wear the same degree, but some cars are quite different, if one piece of the inside wear to the limit, the outside has not worn to the limit, at this time only look at the outside of this piece is not allowed.
When the tire is removed, both the inner and outer brake pads can be seen clearly and accurately, because if you don't have much experience, the thickness judgment is not too accurate when you look sideways from the outside. Usually there are 3 millimeters left to be replaced. If there are 5 millimeters left after removal, it is better to take them apart again in the next maintenance. If there is still 1 cm left, it means the brake pads are still very thick, so next time you don't need to take them apart. There is an alarm pad on the brake pad. If the brake pad is worn to the limit, it will make a noise when it rubs against the brake disc. So if you forget to check the brake pad, you should pay more attention to the sharp abnormal sound when you tap the brake pad gently. It may be that the brake pad is thin.
Most of the brake pads are front wheel wear fast, rear wheel wear slowly, almost two times in front of the wheel, and one time in back. Because the center of gravity of the vehicle moves forward when braking, the braking force is concentrated on the front wheel, so according to the number of kilometers, the front wheel should be checked first. Of course, there are very few rear-drive vehicles with fairly or even fast front and rear wheel wear.