BMW M3 2016–2020 — technical service bulletin
Bulletin B340921 · NHTSA communication 11013041 · issued Jan 14, 2025
Technical service bulletin
communication type
Service Brakes
component
2016–2020
model years
12
vehicle entries
Official summary
A turbine-like noise can be heard from the rear axle while deceleration during the first 300 miles of operation when braking from low speed.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.