That question will get you 100 different answers. I'm on all the Colorado jeep trails, including Holy Cross. I do a lot in the Moab area and ended up with Pro Comp xterrain. Been very happy with them so far, good road manners and not much road noise at 75 mph, and excellent in the rocks. They are 315/75/16s. Hated the Good Year mtr that came new on the Rubi, there was so much road noise you couldn't hear the radio.