Wheel and tyre safety - preventing wheel loss

A wheel coming off a lorry is one of the few defects that can kill a member of the public outright, which is why it is a standing DVSA priority and why the Guide to Maintaining Roadworthiness treats wheel and tyre security so seriously. The good news is that wheel loss is almost entirely preventable with a simple, evidenced routine.

Why wheels come off

Most detachments trace back to fitting, not to the wheel itself: fasteners torqued incorrectly, wheels not re-torqued after being disturbed, corrosion or dirt between mating faces, damaged studs or nuts, or mismatched components. The failure builds over the first miles after a wheel is fitted - which is exactly why the re-torque step matters.

The wheel-security routine

• Torque to the manufacturer's specification with a calibrated torque wrench when a wheel is fitted - never by feel or by an impact gun alone.
• Re-torque after a short distance in service, following the vehicle or wheel manufacturer's guidance and your own written policy. This is the step most often skipped and most often implicated in wheel loss.
• Fit torque-indicator markers so a loosening nut shows at a glance - and so the driver can check them on the daily walkaround.
• Keep mating faces clean and inspect studs, nuts and wheels for corrosion, cracks and damage.
• Record wheel removal and refitting, so there is a trail if a wheel is ever questioned.

Tyres

Tyres are checked at every safety inspection and on the daily walkaround. Watch:

• Tread depth - at least 1mm across the central three-quarters of the breadth for HGVs, all the way round.
• Condition - no cuts, bulges, exposed cords or debris trapped between twins.
• Correct rating and matching - load and speed ratings suited to the axle, and no mixing of incompatible types.
• Inflation and age - correct pressures, and awareness of older tyres, particularly on trailers and steer axles.

The driver's part

The daily walkaround is where a loosening wheel or a failing tyre gets caught between inspections. Torque markers, a visual check of nuts and a proper look at each tyre take seconds and stop most roadside prohibitions for wheels and tyres before they happen.

How OperatorCompliance helps

OperatorCompliance keeps wheel and tyre findings in the daily walkaround check (in the multilingual driver app) and in the safety inspection record, with defects flowing through to their repair - so a tyre flagged in the yard is tracked to the fix, and the whole history sits against the vehicle. See how it works or start a free 14-day trial.

This guide is general information, not legal advice. Follow the vehicle and component manufacturers' torque and re-torque instructions and the DVSA Guide to Maintaining Roadworthiness.

Frequently asked questions

Why do wheels come off lorries?

Most detachments trace back to fitting, not the wheel itself: fasteners torqued incorrectly, wheels not re-torqued after being disturbed, corrosion or dirt between mating faces, damaged studs or nuts, or mismatched components. The failure builds over the first miles after a wheel is fitted, which is exactly why the re-torque step matters so much.

How often should wheel nuts be re-torqued?

Torque to the manufacturer's specification with a calibrated wrench when a wheel is fitted, then re-torque after a short distance in service, following the vehicle or wheel manufacturer's guidance and your own written policy. This re-torque is the step most often skipped and most often implicated in wheel loss, so build it into the procedure.

What are torque markers and why use them?

Torque-indicator markers are pointers fitted to wheel nuts so a loosening nut shows at a glance. They let the driver spot movement on the daily walkaround before it becomes a detachment. Combined with clean mating faces and inspection of studs, nuts and wheels for corrosion and damage, they turn wheel security into a visible, checkable routine.

What is the minimum tyre tread depth for HGVs?

For HGVs the tread must be at least 1mm across the central three-quarters of the breadth, all the way round. Also watch for cuts, bulges, exposed cords or debris trapped between twins, correct load and speed ratings for the axle with no mixing of incompatible types, correct pressures, and the age of tyres, particularly on trailers and steer axles.

Sources

• Guide to maintaining roadworthiness
• HGV inspection manual
• Driver and Vehicle Standards Agency