Because I know my rig is over the GVWR, I make the choice to increase tire pressure above the door placard. This is for several reasosns.....
Although I am under GAWR, I also recognize that axle weghts are static and because I am over GVWR I know that I will be puttying more dynamic load on the axle than Dodge assumed when setting the pressure.
higher pressure reduces side wall flex. Makes for a more stable ride and with less asway, reduces dynamic loading.
I assume that it gives me slightly better fuel economy.
Sleepy recommends it after years of experience running his tire pressures at max. That alone is enough of a reason.
I run at 75 psi minimum and go to 80 if I am pulling anything.
