Off road tires are specially designed tires with increased reinforcement  to help support a vehicle in rough conditions. Aside from a wider and bigger size, they also have stronger treads and special casings. The 3 kinds of casing you can find on off road truck tires are the radial belted ply, bias ply, and radial ply.

These three casings have specific vehicles and vehicle set-ups that you need to know about if you want to get the right off road tires. If your vehicle is on the heavy side, choose the bias ply casing which has fiberglass or steel belts. However, if you have a light vehicle, then you should use the radial belted tires because it will provide you with greater flexibility.

The radial casing is for a smoother drive like speeding down a highway because it has steel belts that will hold your vehicle down so that it can take the speed and give you flexibility at the same time.