Determine remaining distance of brake pads - AP42.10-P-4253-02A

All the brake pads on a vehicle must always be checked for determining the expected remaining distance of the brake pads. If the brake pads on a vehicle axle have worn to a different extent, then the brake pad with the smallest pad thickness should be used for the determination of the expected remaining distance!

The deterioration factor (VF) specifies the appropriate possible mileage for each millimeter of pad thickness at an average load. The deterioration factor (VF) is

• approx. 4000 km/mm for the front axle brake linings
• and approx. 6000 km/mm for the rear axle linings

Determine the expected remaining distance: 

1. Determine the total thickness (G) of the brake pad.
2. Subtract the loss thickness (V= 3 mm) which cannot be used from the total thickness (G).

   This gives the usable residual pad thickness (R).

3. Multiply the residual pad thickness (R) by the deterioration factor (VF).

This gives the expected remaining distance in km.

(G) - (V) = (R)

(R) X(VF) = approx. km remaining distance

Example: 

If the determined total thickness (G) of the most severely worn brake pad on the front axle is approx. 8 mm, the following calculation results:

8 mm - 3 mm = 5 mm

5mm X4000 km/mm = approx. 20.000 km remaining distance

This figure is only intended as a guide. Depending on the driving style and conditions of use of the vehicle the actual remaining distance can deviate from the calculated value to a greater or lesser extent.