When my no option hybrid XL was a week old I took it off pavement on a 100 mile trip and ended up with a rock puncture flat. The next day I traded the whole set of passenger tires for these Wild Peak truck tires - same size as stock. I love them. I have now driven them 3500 miles ... off road...
I drive on a hundred miles of unimproved dirt roads every week, dust collects under the plastic cladding on the bedside. I hate to see my new truck dirty so I have been washing it weekly ... oh, oh, mud flows down the fendersides for a couple of days after each wash.
I guess I'll have to...
More important than power/torque is traction. Climbing a steep hill transfers weight off of the front drive wheels to the back wheels. This is even worse in a truck carrying a load. On dry pavement with a 10% grade this might not be a problem, but if the grade is dirt or gravel you might need to...