During the driving process, the brake system is very important, so we must pay special attention to the problem of the brake system, such as abnormal noise of the brake pads.When driving, brake pads are a headache.The main factors of the brake pads have a lot to do with the brake pads.When the brake pads reaches the alarm line or excessive wear, some abnormal noise is often emitted, mainly manifested as sharp metal friction sounds.Below, lets learn about the reasons and solutions of the abnormal noise and solution of the car brake pads.
The reason for the sound of brake pads
1. Excessive wear of brake pads: The service life of the brake pads is also limited. Generally, it should be replaced in 60,000 kilometers. Of course, the replacement cycle of individual vehicles is long, but the brake pads reaches the alarm line or excessive wear.Some abnormal sounds are mainly manifested as sharp metal friction, and they also have poor braking effects.
2. The brake pad material is excellent: Because the original brake pads are generally made of semi -metallic materials, it is easy to have noise in friction with the brake pads.
3. There is a foreign body between the brake pads: For the car owner, during the driving process, some foreign bodies such as sand and gravel are brought into the brake pads or the brake disc, which will cause abnormal noise when the car is braking.
4. The installation of the brake system is not standardized: This is mainly related to the spacing between the brake pads and the brake disc and the tightening of the nut.
Solution of brake pads
1. Excessive wear situation: For the situation of over -wearing of the brake pads, the owner should go to the 4S shop or the maintenance plant as soon as possible to replace the brake pads. The abnormal noise is not a big problem. The braking effect is a great impact.
2. Excessive material: This generally occurs on ordinary models. Car owners can use replacement of brake pads, which can replace the NAO formula brake pads, less metal brake pads or ceramic brake pads.Sound, but do not replace the soft brake pads.
3. There is a foreign body condition: The owner can go to the maintenance plant for cleaning the brake disc. Generally, it is mainly attached to the brake disc, which rarely affects the brake pads.
4. Installation of irregular installation: For this situation, it is generally troublesome. It is recommended that the owner not to repair it by themselves. It is best to debug in the maintenance plant or 4S shop.
Brake pad purchase
1. Look at the product packaging and qualification certificate
The brake pads produced by regular manufacturers are clearly packed and printing. There are license numbers, specified friction coefficients, execution standards, etc. The packaging box has a qualified certificate, production batch number, production date, etc.The logo and packaging logo are consistent with the logo on the brake pads, and whether the product model is consistent with the content of the certificate.If the packaging is simple, the information is incomplete or no, and even the "three -none" products, you must consider it.In addition, whether it is disc brake pads or drum -type brake pads, the manufacturer strictly stipulates its thickness, and the owner can measure it by themselves.
2. Is the comparative price reasonable
The price of brake pads on the market ranges from dozens to hundreds, and the merchants are emphasizing the original factory during the sale. In addition to the difference in price, the merchants are also known for the difference in quality.The two brake pads can be said to be completely consistent with size and shape, but their prices are three times different.Therefore, the price of one point is indeed the standard for judging the quality of the east to west. As long as the price is lower than the market price, it must be inferior.
3. Observe the appearance of the brake pads
High -quality brake pads are particularly particular about the material ratio of the material of the brake pads, and the appearance looks full of color. It will also have a smooth touch.In order to reduce costs, the workmanship is casual. In the production, a large amount of cheap metal debris will be used in production. The color may be reddish. The surface may have occurred. The red material is the rust of rust.
4. View the friction coefficient of the brake pads
Excessive or too low of the brake film friction coefficient will affect the brake performance. Especially when emergency braking during high -speed driving, if the friction coefficient is too low, the brake will not be sensitive.According to the SAE standard, the brake friction chip will use the FF regulation coefficient, that is, the friction rated coefficient is 0.35 to 0.45.In addition, in accordance with national standards, the suitable working temperature of braking friction films is 100-350 ° C. When the inferior temperature reaches 250 ° C, the friction coefficient will decrease sharply and failure.
5. Choose a well -known brand of brake pads
Good brake pad brand companies have high sales, brand awareness and user reputation are better, and it provides comprehensive after -sales service.When choosing a car brake pad, consider the above factors.

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