My stock tires (24 Ram 3500 SRW Long Bed) have about 36K on them and still look good but we are planning extended trips with the 5th wheel this summer so I want to replace before we leave home base. Most of our driving is highway with maybe a little in dirt/gravel (depending on the camp ground and/or if we go off grid). Also, we don't start out running heavy but as the trip goes, so do the rocks, clothes, gifts, etc. add up. So I am looking for good highway tire with the ability to handle the weight and maybe a littler off road capability. Maybe a unicorn but.......Appreciate real world experience and recommendations. Thank you. John....