Whether imported brands or domestic brands, no matter the size of the brand, there is this abnormal noise problem.

First, let's talk about the coefficient of friction. Friction coefficient refers to the ratio of the friction between two surfaces to the vertical force acting on their surfaces. It is related to the roughness of the surface, not to the size of the contact surface. So the question is, is a good pair of brake pads the greater the friction coefficient, the better? The answer is, of course, No. Usually, the friction coefficient of the brake pad is determined by the weight and displacement of the vehicle chassis. Generally, the friction coefficient of the brake pad of the vehicle with heavy chassis and large displacement is relatively large. On the contrary, the friction coefficient of light chassis should be smaller.

Therefore, we will find that good brand brake pads such as diribal and Huiwei have many kinds of friction coefficients, ranging from 0.33 to 0.48. There are also some small brands with a single formula, which is a friction coefficient. Of course, this situation will reduce comfort and safety, and the probability of noise will increase accordingly.

Then, what is the situation of friction materials? When I visited the repair shop, someone told me that the brake pads he was using were carbon ceramic based, very high-end and trendy, and there was absolutely Dui no abnormal noise.

Hearing this, I have to express my deep admiration. His suppliers are so awesome that they name the materials themselves.