BMW bulletin B310224
What it saysA knocking, “thump”-type noise may be heard from the front axle during straight-ahead driving on uneven road surfaces at low speed, e.g., below 40 mph. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Feb 22, 2024, received Mar 2, 2024, about the suspension. It names 6 model years (2023–2024). 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 communicationA knocking, “thump”-type noise may be heard from the front axle during straight-ahead driving on uneven road surfaces at low speed, e.g., below 40 mph.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B310224 | Service bulletin | Feb 22, 2024 | 10250743 | PDF, 151 KB |
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 6 model years this bulletin names have filed 63 complaints with NHTSA since 2015. 4 of them name Suspension — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Problem: Multiple tire blowouts causing safety hazards and air-suspension damage Complaint Summary: My 2024 BMW i7 has experienced multiple tire blowouts, including the most recent , two within days of each other (12/8/2025 and 12/10/2025). On 12/8/2025, BMW replaced the right rear tire and advised me that the vehicle was safe to drive.
2024 BMW i7 · Suspension · filed with NHTSA Dec 11, 2025 · ODI 11704466
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 group6 other manufacturer communications filed against these BMW models under the same component group (suspension), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 0037350100 | Service campaign | Jun 30, 2026 | The torsion spring may break at the point where it is connected to the active front stabilizer (anti-roll bar) links. A broken active stabil… |
| B310626 | Service bulletin | May 22, 2026 | Noises from the front axle when driving over rough road surfaces, or when turning. |
| B310324 | Service bulletin | Apr 8, 2026 | When rolling forward or backwards with the steering at full lock (left or right) without the brake applied, a“groan”-type noise may be heard… |
| 3711900100 | Warranty extension | Mar 27, 2026 | THE FRONT AND REAR AIR SUSPENSION STRUT ASSEMBLIES LIMITED WARRANTY FOR DEFECTS IN MATERIALS OR WORKMANSHIP HAS BEEN EXTENDED TO 8 YEARS /80… |
| B064625 | Other | Sep 5, 2025 | Control Arm Return |
| B310525 | Service campaign | Jan 31, 2025 | Delivery Stop: Active Front Stabilizer |
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 B310224 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 B310224 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 B310224 cover?
The manufacturer filed it against 6 model years: 2024 BMW 7 Series, 2023 BMW 7 Series, 2024 BMW XM, 2023 BMW XM, 2024 BMW i7, 2023 BMW i7. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.