Truck tyres supplied and fitted

The size is printed on the sidewall. Take 315/80 R22.5 156/150L as an example:

315

The width of the tyre in millimetres.

80

The profile: the height of the sidewall as a percentage of the width.

R

Radial construction.

22.5

The wheel diameter in inches.

156/150

The load index, shown twice on heavy tyres: the first figure is for a single tyre on a wheel position, the second for two tyres fitted side by side (dual fitment).

L

The speed symbol. L means 120 km/h (75 mph).

Our guide to tyre wall markings explains the other markings you will see.

Truck tyres are made for different wheel positions: steer, drive and trailer. Each position works the tyre differently, so tell us which position the tyre is for when you ask for a quote.

• Check pressures regularly with a gauge, and set them for the load you are carrying.
• Look for damage: cuts, bulges, cracking in the sidewall and uneven wear on the tread.
• Know the legal minimum. For vehicles over 3.5 tonnes it is 1 mm of tread across at least three-quarters of the tyre’s width, all the way round. It is lower than for cars, so wear is easy to underestimate.
• Replace a damaged tyre straight away. A tyre that is cut or bulging should not stay on the road.

The vehicle

The make, the type and the weight class.

The tyre size

From the sidewall, including the load index if you can read it.

The wheel position

Steer, drive or trailer, and how many tyres you need.

Where it is

The address or postcode of the vehicle, so we can tell you how soon we can be there.

Not sure about any of it? Call anyway and we will help you work it out.