The short answer is 30 minutes standing, or 40 to 80 kilometres driven. That is what DVSA publishes, and it is what most UK fleet contracts assume.
The longer answer is more awkward. The industry's own best-practice guide warns that some vehicle manufacturers do not recognise the 30-minute procedure. The British Standard the guidance rests on was withdrawn in 2017 and DVSA's leaflet still cites the withdrawn version. And nothing in UK law actually requires you to perform a retorque or to keep a record of one — the obligation comes from your customer's operator licence and from DVSA guidance, not from the Road Traffic Act.
We build job software for mobile tyre fitters, so we have an interest in this subject. Every source below is primary and linked, so you can check it rather than take our word for it.
The interval, source by source
Two cautions on sourcing. The Wheel Security guide text above is from Edition 3, September 2015, obtained from a third-party copy; SOE published a 2020 edition that sits behind membership and we have not read it. And a widely repeated "30 miles or 50 km" figure comes from Continental's UK car page — it is consumer guidance and should not be applied to commercial vehicles.
So the number is 30 minutes or 40–80 km, unless the vehicle manufacturer says otherwise — and across a mixed fleet, some of them do. That has a practical consequence most job systems ignore: if your record cannot express "this vehicle follows the manufacturer's interval, not the default", it will eventually mark a retorque as compliant when it was not.
What the law requires, and what it does not
A lot of trade writing on this subject is wrong in the same way, so it is worth being exact.
There is no Construction and Use regulation about wheel fixings
Regulation 27 of the Road Vehicles (Construction and Use) Regulations 1986 is headed "Condition and maintenance of tyres" and deals with tyres only. Regulation 20 is headed "General requirement as to wheels and tracks" but says only that vehicles must be either wheeled or track-laying. Nothing in Chapter C covers wheel nuts, studs or torque.
The provision that actually applies is regulation 100(1), which requires that a vehicle, its trailer "and all parts and accessories" be in such condition "that no danger is caused or is likely to be caused to any person in or on the vehicle or trailer or on a road." The offence is prosecuted under section 40A of the Road Traffic Act 1988, using a vehicle in a dangerous condition.
Recording a retorque is a guidance requirement, not a statutory one
DVSA's Guide to Maintaining Roadworthiness states plainly: "All re-torque checks must be recorded and retained on file." That sentence is the reason retorque records exist in practice. But its force comes from the operator's licence undertakings and from what a Traffic Commissioner expects to see, not from an Act or a statutory instrument. If you are writing a tender response, describe it accurately: DVSA guidance requires the record. The law requires a safe vehicle.
Where a fitting company's own exposure sits
Section 3(1) of the Health and Safety at Work etc. Act 1974 is the one that matters to a contractor, because road users are not your employees: every employer must conduct their undertaking "in such a way as to ensure, so far as is reasonably practicable, that persons not in his employment who may be affected thereby are not thereby exposed to risks to their health or safety." A fitting operation with no documented procedure, uncalibrated wrenches and no retorque records is exposed on that section as a systems failure, independently of what any individual fitter did on the day.
We could not find a reported UK prosecution of a third-party tyre fitter arising from a wheel loss, and we are not going to invent one. Nor is the allocation of liability between operator and fitter settled by any authority we could locate. This page is a summary of published guidance and is not legal advice.
How often wheels actually come off
The figures everyone quotes come from one place: research by the Transport Research Laboratory for the Department for Transport (Phase 1 in 2006, Phase 2 final report in 2010). It estimated, for the UK per year:
- between 7,500 and 11,000 cases of loose wheel nuts
- between 150 and 400 wheel detachments
- between 10 and 27 injury accidents
- between 3 and 7 fatal accidents
Read those as modelled ranges, not incident counts, and note that the research is now fifteen to twenty years old. We could not find any current official UK count of commercial vehicle wheel-loss incidents, which is itself worth knowing if someone quotes you a precise modern number.
You will also see "3,000 incidents and 10 deaths a year". That comes from a 1996 Early Day Motion — a parliamentary campaign figure, not research, and roughly ten times the later detachment estimate. The two should never be blended, and a page that quotes the larger number because it is more alarming is not a page to rely on.
Torque values and wrench calibration
There is no single UK wheel nut torque. Values are manufacturer-specific, which is why DVSA tells you to check the manufacturer's procedure rather than publishing a figure. Published examples across vehicle types run from around 350 Nm on some buses to considerably higher on heavy goods axles — wide enough that a default value in a job system is a hazard rather than a convenience.
On tooling, DVSA is direct: "always use a calibrated torque wrench to tighten wheel fixings; do not use power tools or long bars for final tightening."
The standard everyone cites has been withdrawn
DVSA's leaflet cites BS AU 50 Part 2 Section 7a:1995, the code of practice for the selection and care of tyres and wheels for commercial vehicles. That version was withdrawn on 30 August 2017 and superseded by BS AU 50-2.7b:2017. The leaflet, last updated in June 2014, still points at the withdrawn one. If you quote a standard in a tender response or a policy document, quote the current one.
Calibration intervals are not settled
There is no legal calibration interval for a torque wrench. Published practice ranges from six-monthly (recommended by at least one axle manufacturer) to annual; tool suppliers commonly quote twelve months or 5,000 operations; and the IRTE Workshop Accreditation scheme requires the calibration process to be confirmed and logged. These are not consistent with each other, and anyone stating one of them as a rule is overreaching. What matters operationally is narrower: if you claim a calibrated wrench on a job, you need to be able to produce that wrench's certificate and show it had not expired on the date of the job.
What a retorque record has to evidence
No published UK form is definitive, so this is assembled from what the guidance above actually requires rather than copied from any product:
- the vehicle, and the specific wheel position or positions
- the date and time of the original fitting
- the torque value applied, and where that value came from
- that a calibrated torque wrench was used, and which one
- any parts renewed, and when
- whether the retorque was carried out by the fitter or handed to the driver
- the date, time and reading of the retorque, and who performed it
On retention: DVSA requires maintenance records to be kept for at least fifteen months. The retorque instruction says records must be "retained on file" without attaching a period of its own, so the sensible reading is to retain them with the rest of the maintenance file rather than to a shorter clock.
The handover problem
The Wheel Security guide contemplates the fitter not doing the retorque. Its instruction is explicit: "If the re-torque is NOT carried out as part of the completed operation, leave the 'Re-Torque' section blank and hand the label to the driver." Logistics UK sells a Torque Tag Label for exactly this purpose.
For a mobile fitter that is the normal case, not the exception. You fit at a depot gate or on a hard shoulder and you are not there thirty minutes later. So most of the retorques you create are obligations you immediately transfer to someone else.
A paper tag transfers the action. It does not evidence that the action happened. It ends up in a cab, not in your file, and it produces nothing you can search when a wheel comes off six weeks later and a claims handler asks what you did. "We handed the driver a tag" is a materially weaker position than "here is the handover, timestamped, here is the reminder the vehicle keeper received, and here is what came back."
That gap — between creating an obligation and being able to show it was discharged — is the part of retorque management that paper cannot close and that most job software does not try to.
Earned Recognition makes this your customer's problem, and therefore yours
DVSA's HGV operator audit standards for Earned Recognition include, at 3.13.5: "Evidence the wheel fitting and torquing procedures are documented and followed in line with the policy."
The same standards require that audit checks "must sample records across all types of maintenance providers (for example manufacturers, independents and in-house)."
Read those two together. Earned Recognition does not regulate you as a tyre supplier. It makes your customer's accreditation depend on evidence that you hold. If an ER operator's auditor asks for the wheel fitting and retorque history for a period and you cannot produce it, you are the reason their audit has a finding — and that is a commercial conversation, not a compliance one.
How AxleGrid handles it
Briefly, because this is a guide rather than a product page.
- A retorque is an obligation created by the job, with its own due state — not a line on a job sheet that someone remembers to read.
- The vehicle keeper is notified, because the keeper is usually the party who has to act, and the notification is a record in its own right.
- Overdue retorques are one of the gaps a contract pack reports about itself, before it is released to the customer.
- Retorque closure appears in the period return for the contract alongside SLA attainment and evidence completeness.
- The evidence sits in the job's hash-chained bundle, so the bundle can report whether it is intact rather than being taken on trust.
What it does not do is decide the interval for you. Manufacturer-specific intervals are configuration, and getting them right for your fleet mix is your judgement, not ours.
How contract packs and SLA measurement work · Book a walkthrough
Sources
- DVSA, Guide to Maintaining Roadworthiness — §5.1, wheels and tyres; §1.5, record retention
- DVSA, Careless torque costs lives — commercial vehicles: wheel maintenance
- DVSA, HGV operator audit standards: Earned Recognition — §3.13.5
- Road Vehicles (Construction and Use) Regulations 1986, reg. 100
- C&U 1986, reg. 27 — condition and maintenance of tyres
- Road Traffic Act 1988, s.40A
- Health and Safety at Work etc. Act 1974, s.3
- TRL R475, Heavy vehicle wheel detachment and possible solutions, phase 2 — for DfT
- IRTE / Logistics UK, Wheel Security guide — current edition, SOE members
- Logistics UK, Torque Tag Label
- BSI, BS AU 50-2.7a:1995 — withdrawn 30 August 2017
If you spot something on this page that is out of date or wrong, tell us at hello@avior-itsolutions.com and we will correct it and say when.