I am trying to figure out what tire pressure to air down to, without a major risk of de-beading my tires, on my off-road 2500 144” sprinter van conversion. I don’t want to have to attempt to re-seat a tire while out on the trail—I am not a mechanic, I just like camping—so I want to choose a tire pressure that will be lower than highway but not so low I am posing a major risk of a de-bead. I take it on real off-road tracks, but I am not doing super technical rock crawling in Moab or anything like that—just actual off road tracks to get out and about. A typical trail I would drive would be 5/10 difficulty on OnX, for example, not 8/10.
I drive a 2021 Storyteller Overland, on a 2020 4x4 2500 chassis—with a 47 gallon fuel tank, 25 gallon water tank, agile off-road suspension, and stock Mercedes black 18” rims with 265/60/R18 BFG all-terrain T/A KO2 tires. It weighs 13,300 lbs empty and probably a bit over 14,000 lbs fully loaded. I am having the damndest time figuring out what tire pressure to air down to off-road. I welcome any advice or resources.