How often should the brake disc be replaced?

The wear limit of the brake disc is 2 mm. Once the limit is reached, it is necessary to replace it with a new brake disc. However, in actual use, most car owners do not strictly follow this specification. How often (how many kilometers) the brake disc should be replaced depends on individual driving habits.

The brake disc is rusty, how to deal with it?

One of the parts of a car that is prone to rust is the brake disc. Of course, if you drive a sports car, a performance car, or have modified carbon-ceramic brake discs, that is another story. Here we are talking about most family cars on the road, whose brake discs are usually made of iron and therefore rust easily after rain.