These tyres suit a range of different trucks and larger-sized vehicles. 235/75R17.5 tyres have section widths of 235mm. The 40 in the code is the aspect ratio, which means that the height of these tyres is 40% of their width. The R tells you that these tyres are designed with radial ply construction, while the 17.5 lets you know that they suit rims that have 17.5 inch diameters.
At the end of a tyre's code, there is a combination of two or three numbers and a letter. These show you what the maximum load capacity of each tyre is, as well as the top speed that they can be driven at safely. In the case of tyres such as 235/75R17.5 132M, they can carry 2000kg each at speeds of up to 130km/h.
235/75 R17.5 tyres can be used on a number of different trucks. They can fit a wide range of makes and models, but you need to be sure of the right size for your truck before you make your purchase, because there can be small differences between the models.
When shopping for tyres, you should take time to consider your decision thoroughly. This is because some tyre sizes may be better for certain drivers than others. Instead of using 235/75R17.5 tyres, you may prefer something wider like the 245/70R17.5. The extra width will give you a shorter braking distance and improve the handling of your vehicle.