I’ve got a 2020 F-350 DRW POWER STROKE. I run 65 psi on my rear tires and 75 psi on front tires when towing my 2019 Grand Design 337 Reflection. What would be a good pressure to use when not towing my RV?
I have the same truck and the same tire pressures on the white/yellow sticker on the driver side door.......except mine is a 2016 Dually. I run the sticker pressure on mine all the time....65 psi in the rears and 75 in the front.
I suggest consulting a tire load chart for your particular brand if you want to run something under the door spec. Just make sure you have a good idea of the trucks empty weighs. I run my Michelin’s at 50psi front and rear when I’m empty. That’s bout 3300lbs per axle. Door label is 50/60psi.