I have a 2010 Ram 1500 TRX4 Quad Cab and haul a 8000 pound fifthwheel. Which tires do you recommand that are not all terrain ? I would like a smoother ride since I never go off road and do not need the more aggressive threads.
I have GoodYear Wrangler LT275/70R17 114/110R tires on the truck.
Is is OK to change pressure in the tires when pulling the fifthwheel: 37 psi without and 45 with?

I run lower pressures in my tires when I am not hauling, gives a more comfy ride. (and the 2nd gen 3/4 tons need all the help they can get in that area.)

Look for a good all season tire, assuming you have to deal with winter......