The Complete Guide to HGV Tyre Maintenance in the UK

Why Tyre Maintenance Is Your Fleet's Most Important Safety Task

Tyres are the only point of contact between a 44-tonne articulated lorry and the road surface. A single tyre failure at motorway speeds can have catastrophic consequences — not just for the driver and cargo, but for other road users. In the UK, the DVSA (Driver and Vehicle Standards Agency) takes HGV tyre compliance extremely seriously, and operators found running vehicles with illegal or dangerous tyres face substantial fines, vehicle prohibition notices, and potential criminal prosecution in serious cases.

Daily Tyre Checks Every HGV Driver Must Perform

Under UK law, HGV drivers are responsible for conducting pre-drive safety checks, and tyres are a key element of this obligation. Every driver should check the following before departure: tyre pressure across all axles using a calibrated gauge, visible tread depth across the full width of the tyre, tyre sidewalls for cuts, bulges, or embedded objects, wheel nuts for tightness using a torque wrench, and valve caps for presence and security. These checks take under ten minutes but can prevent incidents that cost lives and livelihoods.

Understanding Legal Tyre Tread Depth for HGVs

For HGVs over 3.5 tonnes, the minimum legal tread depth in the UK is 1mm across the central three-quarters of the tread width and around the entire circumference. However, at 1mm the tyre is already dangerously worn — most fleet safety managers enforce a minimum replacement threshold of 3mm to maintain adequate wet weather braking performance. Tyres with uneven wear patterns should be investigated immediately, as this often indicates wheel alignment problems, incorrect inflation, or suspension issues.

Correct Tyre Inflation: The Single Biggest Factor in Tyre Longevity

Running commercial vehicle tyres at incorrect pressures is one of the most common and costly mistakes in fleet management. Under-inflation causes excessive heat build-up in the tyre casing, dramatically accelerating wear and increasing the risk of blowout. Over-inflation reduces the contact patch with the road, compromising braking and cornering stability. Most drive axle tyres on 44-tonne artics require between 110-120 PSI, while steer axle tyres typically run at 90-100 PSI. Always consult the vehicle manufacturer's specification and adjust for load.

Scheduled Tyre Rotation and Inspection Intervals

For HGV fleets, we recommend a formal tyre inspection every 10,000 miles or 6 weeks — whichever comes sooner. Tyre rotation between axle positions can extend service life by up to 30% by evening out wear patterns. Keep detailed records of all tyre inspections, replacements, and pressure checks. Not only does this demonstrate due diligence in the event of an incident, but it also provides valuable data for forecasting replacement cycles and managing tyre budgets effectively.