View Here : I Curb Weight
At the GVWR (and assuming the max axle weight i found online) the pressures are only 55 front and 70 rear. This is a bit lower than the door sticker and dropping the pressure in the rear 10lbs helps the ride quality immensely.
I am wondering what the curb weight is on a 01 4x4 lb w/v10 3/4 and 1 tons. My guess is the 3/4 ton weighs close to 6000 lbs. wet, but I don't know how much more the 1 ton weighs.