BMW M3 2015–2016 — technical service bulletin
Bulletin B340615 · NHTSA communication 10147199 · issued Jul 1, 2015
Technical service bulletin
communication type
Service Brakes
component
2015–2016
model years
4
vehicle entries
Official summary
Grinding Noise from Rear Brakes. Pebbles, road grit, or other foreign materials caught between the brake protection plate and the brake disc may cause a disturbing noise in the rear axle area.
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.