Tyres are the only part of a 44-tonne vehicle that touches the road, and they sit at the intersection of every enforcement regime: a daily walkaround item, a fixed category in the annual test failure tables, a roadside prohibition trigger, and - after a tyre-related incident - one of the first maintenance records an investigator pulls. Tyre management is not glamorous, but it is one of the highest-yield maintenance disciplines a fleet can tighten.
The Guide to Maintaining Roadworthiness makes tyres a standing example of what daily checks are for. Operators should assess the likelihood of damage or defects being incurred during the day and introduce additional checks where required - the guide’s own example includes checks of tyres, body and wing components and ancillary equipment. And the site-work rule is explicit: when a vehicle is on site work, for example being used on rough terrain, you must walk around the vehicle before leaving the site to identify any faults or damage, with particular attention to the wheels and tyres. If any safety defects are found, you must not use the vehicle on the road until it is repaired.
That last sentence deserves emphasis for tippers, mixers and muckaway fleets: the walk-around before leaving site is not advisory. A tyre gashed on the tip that then fails on the A34 is a foreseeable, documented-duty failure.
The construction and use rules set the measurable standards: minimum tread depth across the prescribed breadth, tyres free of cuts, bulges and exposed cord, correct fitment and mixing rules per axle, and inflation adequate for the load. The annual test measures against these - tyres account for a consistent slice of HGV test failures, around 0.8% in DVSA’s published top-ten data - and roadside examiners apply the same ruler with prohibition power behind it. A tyre that would fail the test is not a test-day problem; it is illegal every day it rolls, and it was visible to anyone who looked.
Good tyre management is a loop, not an event. The daily driver check catches the obvious - damage, deflation, embedded objects, wheel-fixing indicators. The safety inspection measures properly: tread depths recorded per position, pressures checked against the load schedule, condition assessed, and the numbers trended so a tyre wearing unevenly flags an alignment or suspension issue before it becomes a scrubbed-out casing. The rectification discipline closes the loop: tyres at or near limits replaced on schedule rather than run to the wire, and replacements matched correctly across axles.
The economics reward the discipline. Correct inflation is the single biggest lever on tyre life and a measurable lever on fuel burn; under-inflation flexes the casing, builds heat and shortens life while costing fuel. Alignment and suspension condition decide whether tyres wear evenly or die early on one shoulder. And casing management - tracking, retreading where the policy allows, analysing failures - turns tyres from a consumable bought on price into an asset managed on cost per kilometre.
Tyre management is inseparable from wheel security. Wheel loss incidents are rare, catastrophic and almost always traceable to fixing torque errors - disturbed wheels not re-torqued after the required running period, or fixings over-tightened and stretched. The management controls are procedural: re-torque after wheel refit at the specified mileage, marked fixings or indicators where fitted, and a record of who torqued what and when. A fleet that cannot show its wheel-torque records after a wheel-off incident has a serious evidential problem.
Tyres earn their place in three daily moments: the driver’s walkaround (with the pre-departure site check where terrain demands it), the inspector’s measured check at every PMI, and the manager’s trend review across the fleet. Get those right and the annual test tyre line, the roadside prohibition risk and the tyre budget all improve together - because they were always the same system measured in three places.
Tyre evidence belongs in the maintenance file like everything else: tread depth and condition records from each safety inspection, rectification records for replacements, wheel-torque records for refits, and the daily check reports that show tyres were being looked at. After a tyre failure with consequences - a blowout collision, a wheel-off incident - those records are the difference between demonstrating a managed system and having to assert one. The fleets that pass that test are not the ones with the newest tyres; they are the ones who can show the measurements, the decisions and the dates. Build the recording into the inspection routine rather than reconstructing it after the event, and tyre compliance looks after itself alongside tyre safety.