Mark the position of the wheel disc on the hub so that you can then install the balanced wheel in its original place. Loosen the wheel bolts.
Raise the car, remove the wheels.
Measure the thickness of the brake lining with a caliper, i.e. without the rear plate of the shoe. With a hand brake, this requires removing the brake drum with the brake disc.
The wear limit of the front and rear disc brake pads is reached when the thickness of the brake linings is 2 mm.
Wear limit of drum brake shoes (parking brake) achieved if the thickness of the brake linings is 1.5 mm.
When the wear limit is reached, replace the brake pads. Be sure to replace all pads on one axle at once.
Note: A rough estimate of the service life of the front disc brake pads is a pad wear of 1 mm per 1000 km. This estimate is given for the most unfavorable operating conditions. Under normal operation, the pads last significantly longer. With a brake pad thickness of 5 mm (without backplate) the remaining resource is at least 3000 km.
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