When I get a new vehicle, I always do a Chalk Test.
Get the truck loaded the way you're going to drive it most of the time. Get in an area where you can drive in a straight line for a short distance (couple hundred yards). Air the tires to factory specs and use chalk to make a couple of fairly thick lines across the tread. Drive in a straight line until the chalk is showing enough wear that you know how much tread is actually touching the ground. Adjust the tire pressure until you have about 1/2 to 3/4 inch of chalk remaining on the outside of the tread and use this pressure.
If you're going to haul a load or pull a trailer you may want to increase pressure accordingly.
On my '19 Raptor, I'm running the recommended 38 up front and 32 in the rear. After 22,000 miles and one rotation, the tires are wearing very evenly. Looks like I'll get at least 50,000 miles out of them.
Did the same thing on my '13 SCrew 4x4 and got 65,000 miles on Goodyear AT's. It currently has KO2's on it, they have over 40,000 on them and look like they'll last at least another 20,000.
I'm no Spring Chicken and have done this on all my vehicles for at least the last 30 years with very good success and no tire failures or problems.
Just my experience.