HGV Wheel Security: Wheel Changes, Retorque Records and Responsibilities

Who is responsible for wheel security?

The operator is responsible for the system: competent people, the right tools, manufacturer data, and records that show the work and the re-torque. The person who refits the wheel is responsible for following the correct procedure. The driver is responsible for the condition of the vehicle in use, including noticing loose or damaged fixings on the daily walkaround and during the journey.

The Guide to Maintaining Roadworthiness points operators to commercial vehicle wheel maintenance guidance and to checking manufacturers’ recommended procedures when refitting road wheels. It also states that all re-torque checks must be recorded and retained on file.

• Operator: system, training, calibrated tools, file retention
• Fitter: correct torque, sequence, parts and interfaces
• Driver: daily visual / indicator check and defect reporting
• Transport manager: sample whether re-torques actually happened

After a wheel change: torque, then re-torque

Always use a calibrated torque wrench for final tightening. Do not use power tools or long bars for the final torque. Tighten to the manufacturer’s recommended torques or procedures and in the proper sequence. If a sequence is not quoted, tighten gradually on approximately diametrically opposed nuts in turn. That guidance is summarised in Careless Torque Costs Lives.

Early relaxation of tension after initial tightening is expected. The code of practice for the selection and care of tyres and wheels for commercial vehicles recommends checking wheel nut torque after the vehicle has been standing for 30 minutes or after having travelled for between 40 km and 80 km (25 to 50 miles). Follow the manufacturer’s instructions where they set a different procedure.

Daily walkaround and indicators

DVSA’s HGV walkaround list includes tyres and wheel fixings: security, tread, inflation, sidewall damage, cord, and whether wheel nut indicators (if fitted) have moved. Indicators help spot movement; they do not replace correct installation torque or the re-torque record after a change.

Do not simply retighten very loose fixings or wheels that repeatedly loosen. Find out why, and whether damage has been caused. A driver who finds a dangerous wheel condition stops in a safe place and reports it — the same defect chain as any other safety defect. The fuller daily check is in HGV daily walkaround checks.

What to record and keep

Record every re-torque check and retain it on file. A useful record names the vehicle or trailer, the wheel positions, the date and time of the change, who did the work, the torque procedure followed, and when the re-torque was completed. Missing re-torque sheets after a tyre change are a classic gap in a maintenance investigation.

Wheel work found at a safety inspection belongs with that HGV PMI inspection history. Planned inspections do not replace the re-torque window after a roadside or yard wheel change.

Common questions

Is there a legal Nm figure for all HGVs?

No. Use the vehicle manufacturer’s recommended torque and procedure for that fitment. Official guidance tells you to check those procedures; it does not replace them with one number.

Must every re-torque be written down?

Yes as best practice in the roadworthiness guide: all re-torque checks must be recorded and retained on file.

Are wheel nut indicators enough?

They help drivers spot movement on the walkaround. They do not prove the wheel was fitted correctly or that the re-torque after a change was done.

Where does this sit with PMI intervals?

Inspection frequency is separate — see HGV PMI inspection intervals. A wheel change mid-interval still needs the re-torque process.