Truck tyres and wheels have to work together under heavy loads, towing, and rough ground. A tyre with the wrong load range, or a wheel that is not rated for the axle, can fail even when it looks fine. This guide explains how to match truck tyres and wheels, what the load markings mean, and what to check when you change either one.
Why load matters
Each tyre has a load index and, for many truck tyres, a load range that shows its capacity at a given pressure. Each wheel has a load rating. Both must meet or exceed the requirement for the axle they are fitted to, and the manufacturer’s figures set the limits.
Load range and pressure
Load range markings show how much a tyre can carry at a set pressure. Running a tyre below the pressure needed for its load overheats it, while over-inflation reduces grip and wears the centre of the tread. Set pressures for the actual load, and check them before loaded journeys.
Matching the tyre to the wheel
Confirm the tyre is approved for the wheel width and diameter. A tyre that is too wide or too narrow for the rim changes its shape and can reduce grip and wear unevenly. Ask a fitter to confirm the pairing before fitting.
Tyres for towing and trailers
Tyres for trailers and towing are designed for steady loads, and should not be used on driving axles unless they are approved for that use. Check the trailer data plate and the tyre markings before buying.
Frequently asked questions
Can I use a higher load range tyre than the one fitted? Usually yes, as long as the tyre is approved for the wheel and the size, but check with a fitter first.
Do truck tyres need checking more often? Yes. Check pressures before every loaded journey, and inspect the sidewalls and tread regularly.
Where can I find the load rating? The tyre sidewall shows the load index and load range, and the owner’s manual or trailer plate shows what your vehicle requires.
Get help matching truck tyres and wheels
For more on choosing truck tyres and wheels, read our tire guides and our wheel guides. If you are not sure which tyre and wheel combination suits your truck or trailer, contact us and we will help you check.