I installed the 285/17R70 Nitto Terra Grappler with no problems at all. Actually with a camper load I get accurate speed and odometer readings with the new tires as the tire height is quite different with a full load in the box.
The Nitto tires have an optimum rim width and a minimum and maximum wheel width. My stock rims were at the Nitto minimum and my maximum load is at 89% of the tire's load capacity. If I had the truck at 100% of the tire capacity I would have given some thought to wider rims.