BMW M2 2015–2018 — technical service bulletin
Bulletin B330119 · NHTSA communication 10153752 · issued Jan 1, 2019
Technical service bulletin
communication type
Suspension
component
2015–2018
model years
10
vehicle entries
Official summary
DRONING NOISE FROM THE REAR AXLE. A humming/droning noise is heard with vibration during partial to full engine load in higher gears. The tuning of the rear suspension mount for the differential.
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.