my 2 cents worth of hot air
Marc,I feel that you need to explore the basic's first.Type of tire(off road/comb)street,snow,etc.Load rating,type of driving (most freeway/gravel roads) I say this for the years i lived in Idaho 80%of my driving was dirt/gravel,you get my drift.This being said as i have said in the past depending on the use at the moment the tire pressure should be adjusted to conditions.This is the biggest thing i see people not doing.(you know "we are only going a few miles down this rocky road to camp")this is when you have problems,then if you do lower pressure you get back on road and put off adding air till you get gas etc.I say this as you asked about air pressure with fwc/atc on truck,which says you are using as most of us do drive to area,explore,drive back home.So in my opinion a good on board air system is the best answer to air pressure question!There have been times that within 1/2 mile I have lowered pressure from 20 psi to 5-7 psi to get out of soft,soft sand then back up to 20 psi to reach road then up to 32 psi to head home,A real pain but easier than changing tire or trying to get unstuck!Hope this adds to your confusion!
Drive slow and enjoy "its the journey"
Les Lqhikers