These tyres have a width of 255mm and an aspect ratio of 70%. The aspect ratio tells you the height of a tyre in relation to its width. The R in a tyre's code tells you that it is made with radial ply construction, while the following number indicates the wheel rim's diameter. 255/70R22.5 tyres fit wheel rims of 22.5 inches.
Tyres have one last aspect to their codes. This combination of two or three numbers and a letter at the end symbolises how much weight each tyre can carry safely, as well as the top speed that they can reach. In the case of 255/70 R22.5 140M tyres, they have a maximum load capacity of 2500kg and they can travel at speeds of up to 130km/h.
255/70 R22.5 tyres can fit a range of different makes and models. They feature heavy duty construction to support the increased weight that truck tyres undergo. Before purchasing your new tyres, make sure to double check the correct size for your vehicle. This is because there can be slight differences in size between years, even for the same model.
You may decide that another size suits your vehicle better than 255/70R22.5 tyres. Something wider will give you a shorter braking distance and better handling. This makes wider tyres a great choice for safety conscious drivers. If you would prefer something that gives you better fuel economy and a smoother experience, you should consider narrower tyres instead.