BMW bulletin B310526
What it says“Popping” noise from the front axle when cornering and driving on uneven road surfaces. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Apr 29, 2026, received May 1, 2026, about the suspension. It names 3 model years (2022–2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication“Popping” noise from the front axle when cornering and driving on uneven road surfaces.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B310526 | Service bulletin | Apr 29, 2026 | 11031871 | PDF, 964 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 32 21 6 769 539 | Self-locking hex nut | 1 | eBay Motors → |
| 31 30 6 865 312 | Hexagon bolt with flange thread-tapping | 9 | eBay Motors → |
| 07 11 9 904 161 | Hex screw with collar (M10x60) | 1 | eBay Motors → |
| 07 14 8 835 360 | Combination nut | 1 | eBay Motors → |
| 31 10 6 789 333 | Torx screw | 1 | eBay Motors → |
| 31 10 6 765 451 | Combination nut (M10-22H ZNS3) | 1 | eBay Motors → |
| 37 10 6 789 678 | Hex nut with flange | 1 | eBay Motors → |
Read by machine from the document NHTSA serves (4 pages), read Sep 30, 2026. A part number is shown only where it matches BMW’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 3 model years this bulletin names have filed 47 complaints with NHTSA since 2015.
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the suspension
Source: same model, same component group3 other manufacturer communications filed against the BMW 5 Series under the same component group (suspension), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B310626 | Service bulletin | May 22, 2026 | Noises from the front axle when driving over rough road surfaces, or when turning. |
| B370125 | Service campaign | Jan 10, 2025 | DELIVERY STOP: SUSPENSION STRUT HOLDER |
| B330224 | Service bulletin | Aug 15, 2024 | When driving over a rough road surface (e.g., cobblestone or similar surfaces), a rattling noise may beheard from the rear axle. See attache… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for BMW, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is BMW B310526 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the B310526 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every BMW warranty extension on file lists the ones BMW has filed.
Which vehicles does B310526 cover?
The manufacturer filed it against 3 model years: 2024 BMW 5 Series, 2023 BMW 5 Series, 2022 BMW 5 Series. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.