Sticker on truck says 39lbs all around. I have the 20" goodyear rsa's. Do all the 2014 rams with 20" wheels have the same suggested tire pressure? I guess I'm asking because the truck does ride a bit better with a little less pressure. Also my last vehicle, GMC Yukon with 20in wheels suggested 32lbs all around. Not a pick-up truck I know but still pretty heavy.
My 2013 says 39 (except 35 for the spare) on the door jamb, but my dad's 2009 says 35 all around-both have the stock tires and 20" wheels. I usually run mine right at 40psi though.