Aggie is correct. The tires can be run down to 0 psi on a light truck. The tread has very poor traction in snow or wet. I have heard sipping helps. The problem is the rubber is too hard. Off road traction is ok, but there are many better tires out there.
My buddy went through all the same steps to put them on his Toyota and has them for sale if anyone wants them.
If you want the best get Walker Evans wheels, run Stauns and whatever tire you prefer. The money you save doesn't justify the poor performance of the H1 setup. JMO.
Dodge 3500 SRW 4x4 6.7L Cummins, Auto, Nowhere near stock, Carli Suspension, Yokohama 37", King 2.5" shocks