After recently getting back into Travel Trailer camping (took 12yrs off) I cant remember how much tire pressure I should run in my tow vehicle. I run a 2003 F250 Diesel on 31x10x50 10 ply tires Load R...
I have a 3500 dualy and keep my tires pressurized to the max (80 psi). I know it makes for a harder ride when not towing, but when towing, everything seems to handle much better. I do not air-up, and then air-down. I've just learned to live with the harder ride when not towing. Yes, it does make a difference... squishy feeling or solid feeling.