I normally run 10 to 15 psi under max pressure up front and 20 to 25 under max pressure in the rear, that is when unloaded of course.
You can always do the chalk test if you are unsure what pressure to run.
What's the chalk test? I have been running my Toyo AT2's @ 65 psi all around when running empty. They seem to be wearing quite nicely actually although oddly they start howling around the time a rotation is needed. That I found interesting.
2007 Silverado LBZ,CC, short box, 4x4, Cat fuel filter Adapter, otherwise all stock (for the moment)
"Never argue with an idiot... they bring you down to their level and beat you with experience"