Hankook is supplied by Ford from the factory on many truck models.
If you want to pick up some capacity in the tires, go to a Euro C tire in the 225/75R16 size. These are made by Michelin as the AGILIS® ALPIN® p/n 18018, which will NOT be marked as LT but rather will be followed by a C, which means Commercial or Cargo, and is a European spec tire for the Ram Promaster and other Euro Vans. It has a load rating of 3195 lbs at 83 psi vs your current tires 2680 at 80 psi. Only other manufacturers at the present are Nexten Rodian CT8 HL p/n 15386 and Continetal's VancoFourSeason™ p/n 4733350000.
'03 Ram 2500 CTD, 5.9HO six speed std cab long bed Leer top and 2008 Bigfoot 25B21RB.. Previous, Being repaired and will be sold, is a 2008 Thor/Dutchman Freedom Spirit 180. SOLD - 2007 Winnebago View 23H Motorhome.