When you have an armored vehicle, it will by default be very heavy., The military has a big need for armored vehicles that can move in more or less any terrain. The terrain will shift depending on weather, as the same area can go from very muddy during heavy rain to deep snow and slushy during wintertime.
All terrain military vehicles tire need to provide the necessary stability in all different terrains and avoid getting stuck. In addition it is key that the tires are very durable to that they can remain in operations during long times without having to change the tires. Check the technical tire manual for more information.