I have 13k miles on my 315/70/17 Duratracs. I went with them because they are great in the snow and one of the lightest tires in that size. I usually don't care about weight. I ran 78 lb. Trail Grapplers on my last 2 trucks but I wanted something lighter this time. I've been running Duratracs on my Bronco for about 6 years.