Service bulletins for the 2020 BMW M4
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
48 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Suspension are shown. Show all
| B310124 | 2024-02-01. Service bulletin. SUSPENSION. With the vehicle is on a lift and the front struts are in the extended position, there may be a cracking and orclicking type noise when turning the steering wheel left/right. See attached video V31 01 24. The sound can reoccur when the vehicle is lowered, and the wheels are once again under load. The noise might also be heard for a short time while driving. |
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| B340515 | 2020-12-21. Service bulletin. WHEELS:LUGS/NUTS/BOLTS/STUDS; EQUIPMENT; SUSPENSION; EQUIPMENT ADAPTIVE/MOBILITY. TICKING NOISE FROM THE FRONT AXLE WHEN CORNERING: The customer may complain of a metallic ticking noise from the front axle, when cornering, maneuvering, parking or pulling away from a parking space. |
| B310112 | 2020-09-14. Service bulletin. SUSPENSION. CRACKING NOISES FROM THE FRONTAXLE AREA WHILE TURNING THE WHEELS, WHEN STATION: Cracking noises are heard from the front axle area while maneuvering at low speeds (e.g., parking lot maneuvers) or when turning the steering wheel while stationary. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.