So here is a situation. I have not weighed my new DRV 39TKSB3 yet but I am fairly certain my per tire weight will not exceed 4K. The tires are GY "H" 17.5's at 125 psi, at max inflation they will carry 4,806 lbs. The chart says at 4,020# the inflation should be 100lbs. If you add 5psi that brings the capacity to 4,180#.
I can't find a thing from DRV that tells me what to inflate my tires to. I did check the tires and each had 115psi, at that pressure the tires are good for 4,495#.
Before doing anything with the air pressure I will weigh each tire. If the weights are what I suspect I will be running closer to 110psi.