The brake pads do not need to be replaced according to the mileage, there are a few simple ways to see the wear and tear
Friends who understand cars may have a clear concept that cars themselves are consumables, and the accessories within them are replaced in a timely manner as the vehicle ages. But many people don't know when to replace the brake pads. Some people say they can replace them every 30000 kilometers according to the maintenance manual, but because everyone's driving situation and road conditions are different, the wear and tear of the brake pads varies.
1.Observe its shape - see its thickness
The thickness of a brand new product is generally around 1.5cm, and it will gradually become thinner with continuous friction during use. After consulting professional technicians, it was found that when the thickness of the brake pads is only about one-third of the original thickness (about 0.5cm) by naked eye observation, the car owner needs to increase the frequency of self inspection and be ready to replace them at any time. Of course, due to wheel hub design reasons, some models do not have the conditions for visual inspection and require tire disassembly to complete. There is a raised mark on both sides of each brake pad, with a thickness of about 2-3 millimeters, which is also the limit for replacing the thinnest brake disc. If the thickness of the brake pad is already parallel to this mark, it must be replaced. Therefore, when the thickness of the brake pads approaches this mark, car owners need to observe and prepare at any time. However, it is difficult to accurately observe with the naked eye without dismantling the tires. Currently, many car models may indicate the position of the instrument hand brake light when the brake pads are too thin, which is more convenient for self inspection.
2.Hear its sound - listen to the sound
If there is a sizzling sound of "iron rubbing against iron" while lightly applying the brake, the brake pads must be replaced immediately, excluding the use and running in stage of the new brake pads. Because the limit markings on both sides of the brake pads have directly rubbed against the brake disc, it proves that the brake pads have exceeded their limit. When this situation occurs, it is necessary to cooperate with the inspection of the brake disc while replacing the brake pads. When this sound occurs, the brake disc is often damaged, and even if a new brake pad is replaced, the sound cannot be eliminated. In severe cases, the brake disc needs to be replaced.
In addition, there are hard spots in the brake pads that have just been replaced and are of poor quality, which can also cause abnormal noise. Generally, the abnormal noise generated in this way will wear off after a period of time and disappear.
3.Check its strength and feel its strength
According to normal driving habits, if the brakes feel very difficult, it is possible the brake pads have basically lost friction and must be replaced at this time, otherwise serious accidents may occur. This method is relatively abstract and can only be mastered by experienced drivers. It may be difficult to grasp it based on feelings, so it is important to develop a good habit of self inspection. In addition, the reduced braking effect will lead to an increase in brake oil consumption, so when replacing the brake pads, it is important to focus on checking the condition of the brake oil.
No matter which method is used for self-inspection, a more professional and careful inspection must be carried out on the 30,000 km standard line.Related items can also be tested during the usual maintenance process.
Braking is the most important way to protect the safety of personnel inside the vehicle.Safeguard measures should not be taken lightly.
