The wheels you pictures are nearly 40 inches in height. How much towing/hauling do you do with your truck? If you are dead set are running that one wheel and tire combo, you will need a suspension lift. Nitto and Toyo (Tirerack carries neither) offer all terrain tires in 20 inch sizes. BF Goddrich is also coming out the All Terrain TKO in a 20 inch size at some point in the future. Do you intend to lift the truck at all?