Not really worried about running them on the Columbus, just way too many bad tires lately, and not risking tearing things up. On average, I see many more rv's on a daily basis than most of you. I did check the wheels, and they are stamped with manufacturer, weight rating, and style numbers, but no pressure rating.
Steve and Vicki
2011 Dodge 3500 CTD Outdoorsman
2013 Columbus 320RS-ITS HERE!!