When should the brake pads be replaced

How long will the brake pads last? Brake pad replacement is not mileage and years of regulation. Under normal driving conditions, the life of the front brake pads is 20,000 to 40,000 kilometers, and the life of the rear brake pads is 60,000 to 100,000 kilometers. However, it is also possible to use 50,000 kilometers in this car, and 30,000 kilometers in another car must be replaced, which depends on the specific circumstances of the model, vehicle weight, and the owner's driving habits.

If the road conditions you are driving often have traffic jams, then you are bound to brake frequently, so that the brake pads wear degree will be greater, if often in this road conditions, the brake pads of your vehicle may be replaced frequently. The brake pad life of a car driving on urban roads for a long time is longer than that of a car driving on the highway; Driving on mountain roads is shorter than driving on flat roads; Truck brake pads are shorter than the car life. In fact, it is not absolutely accurate to calculate the life of the brake pad, only often check to see its wear and tear.

In accordance with the principle, the brake pads wear to nearly one-third of the need to replace, because the brake pads are thin and friction with the brake disc, and the friction will produce high heat, resulting in the material on the brake pads more dense, which is bound to lead to the brake pads more and more hard. If not replaced in time may lead to increased brake disc wear. There is also a saying that the brake pads need to be replaced when they are used to 3mm. More professional you can see that there is an alarm on the brake pad, grinding to the alarm sheet and then replacement is also feasible.

When should the brake pads be replaced? Here are four ways to tell.

1. The thickness of the brake pads is less than the minimum maintenance standard allowed by the vehicle manufacturer.

2. When the wear alarm switch on the brake pad has been alerted.

3. When the brake pads are contaminated with oil or grease.

4. When the brake pads make abnormal noises during braking.

Under normal circumstances, if the thickness difference between the two sides of the brake pads on the fixed brake caliper reaches 1.5mm, the thickness difference between the two sides of the brake pads on the floating brake caliper reaches 3.0mm, it needs to be replaced. However, only through the simple appearance of observation can not accurately determine whether the brake pad wear, it is best to use a ruler to measure the thinnest point of the brake pad to see whether it is within the allowed range.

The owner needs to be reminded that when replacing the brake pads, the same material as the old brake pads should be used as far as possible. Of course, if the new brake pad material can be higher than the original material, which would be better. When replacing brake pads, pay attention to the following principles :

1. Try not to use NAO materials to replace semi-metallic brake pads.

2. NAO material can replace asbestos material brake pads.