Tire inflation and tire wear is important. The proper rotation and inflation of tires will extend the life of your tires. Tires should be checked monthly for dry rot, for tears and for any kind of cuts in the sidewall. Its very important to keep your front tires aired up. A blow-out can kill you.
Box trucks, flat-nose, and medium duty trucks usually have six tires. I like to run all 6 tires the same kind. What that does is it allows you to rotate your tires front and back and inside the back tires in and out. You can do this if you run all six the same kind.
The proper rotation of tires on a box truck if you have all six the same is every 8,000 miles or so. Take the two outer on the back, rotate those to the front. Take the two on the front and put them on the inside on the back. Take the two inner on the back and put them on the outside on the back. Thats how Id rotate them. This is my recommendation for the proper rotation of tires, but it may not be the manufacturers guidelines. Please rotate your tires according to the manufacturers guidelines. The manufacturers specifications supersede anything that we recommend.