I follow the TV door sticker, 70 PSI front 65 PSI rears, but I did put 70 in the rears for the trip South since we're carrying 4K of pin weight. G614s (G Rated) that came on the rig I kept at 110 PSI, now have G114s (17.5" wheels) are set at 125 PSI. Opinions are as varied as opinions of the best rig. Some follow load charts, others say max side wall. I've heard max side wall from numerous folks at seminars so I'm inclined to follow their suggestions. Before you can really use the load charts you must weight each wheel and set the pressure per the wheel with the heaviest load, but I have seen some results with those charts that say based on the weight they should only have 65 or 70 PSI, to me running a tire designed of 110 at such a low pressure looks like a problem waiting to happen. Would you take and run your TV tires at only half the pressure as noted on the door pillar?? I sure wouldn't I know what happens to Radial tires running at too low a pressure, they tend to roll off the rim in a hard turn. Now think of the pressure on the side walls of you RV tires while jack knifeing 90 degrees into that perfect camp site, you sufficient pressure to keep those tires on their rims.
Disclaimer: These are only my thoughts and observations, you must do as you see fit.
Edited by: mhs4771
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top