When should the percentage table of the brakes be replaced

There are no intervals for changing the brakes. Because wear and tear depends primarily on the daily routes and driving style. The more often and harder you brake, the faster the brake discs and brake pads wear out. That is why time intervals or mileage do not help with orientation.

The following applies to brake pads: The brake pads of disc brakes must be at least 2 mm thick, 3 to 4 mm are better. For drum brakes with brake shoes, the minimum remaining thickness is 1 mm. On most vehicles, a wear indicator announces the need to change the brakes. There are two versions:

1. Acoustic wear indicator: If the minimum thickness is reached, a scratch plate rubs the brake disc and creates an unpleasant squeak.

2. Electronic wear indicator: If the brake lining is worn out, a warning contact is ground free, which closes the electronic circuit and activates the warning light in the cockpit.

The situation is slightly different for brake disks: The minimum thickness (MIN TH = Minimum Thickness) is not specified as a blanket, but depends on the manufacturer's specifications. The minimum thickness of a brake disc is given in the vehicle manual or is stamped on the disc brake on the disc cup or on the outer edge. The thinnest part of the brake disc always counts. If the thickness of the brake disc has already fallen below the minimum, the workshop may no longer replace the brake pads on their own.

The brakes are checked at every major and minor inspection. It makes sense if you also take a look at the brake parts when changing tires in spring and autumn. Cracks or deep furrows in the brake disc also endanger safety. Because the brake block is no longer on the entire surface and only partially engages.