I might add. Correcting pressure when loaded versus unloaded should NEVER be viewed as "lot of trouble". That is part of doing business with a truck, especially a heavy truck. Your kidneys will thank you, as will your passengers.
{Edit} - in light of subsequent posts about the incorrect nature of "PSI changing based on weight (load)", I guess I need to clarify at least what I meant. I mean use more pressure when heavily loaded to get proper tread contact across the tire to the road, and LESS PSI when unloaded, so you can have at least a little comfort to try and counteract the heavy springs, depending on trucks, suspension, weight of cargo and occupants, etc. For example, I use only 12 PSI in my load range C military NDTs on my Willys Jeep. That's so my kidneys last at least as long as my off-roading, not to mention a tremendous increase of traction. Picture it. A less inflated tire forms around the gravel and rocks and other road imperfections, while a very hard fully inflated NDT hits those things hard and forces the Jeep UP and over them, everyone of them!