Premature wear of the rear axle brake pads with standard brakes
BMW technical service bulletin B340320 for 2019-2020 BMW Z4, 2019-2020 BMW 330I and 2020 BMW M340I and others.
- Bulletin number
- B340320
- Component
- Engine and engine cooling
- Summary
- PREMATURE WEAR OF THE REAR AXLE BRAKE PADS WITH STANDARD BRAKES: The CBS data and Check Control (CC) message shows the rear axle brake pads are worn, and the vehicle has less than 15,500 miles. Increased residual braking forces in the rear axle brake calipers caused by production-related deviations on the surface of the piston ring seal.
Owners of these vehicles have filed 83 complaints in the engine category.
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