Before replacing the brake disc, the first thing to check is whether the replacement brake disc is pure accessories, the integrity of the product packaging, anti-counterfeiting signs and packaging signs are consistent with the logo on the brake disc, and whether the product model is consistent with the content of the certificate. The brake disc produced by regular manufacturers has clear packaging printing, license number, implementation standard, etc., and a certificate of qualification, production batch number, production date, etc., in the box. The use of reliable quality of the brake disc, can ensure its service life of 80,000-120,000km. Such as the use of fake or inferior brake disc, a short time can produce braking efficiency, but long-term use, the brake disc is easy to deform because of the high temperature generated by friction, reduce the braking effect, affect driving safety.