Someone certainly went "cheap". Check the pressure rating for the rims (assuming they all match) and get tires that match that rating.
Also what are the tires, I'm guessing "P", when they should be LT or ST.
SWAG the tires should be D rated
Lots about tire rating
here
2008 F350SD V10 with an 2012 Arctic Fox 29-5E
When someone tells you to buy the same rig they own, listen, they might be right. When they tell you to buy a different rig then they own, really pay attention, they probably know something you don't.
