I had BFG KOs on my 2000 GMC 3/4 ton for a time. First set didn't make 50,000 miles before braking a belt in the left front. Put another set on that lasted ~30,000 miles. A friend had some on his 1/2 ford back in the 80s and 90s and was still going strong at 80,000. He didn't haul much and rarely took them offroad. I thought they were real good on ice and light or packed snow, but not any better than other ATs in deep snow. Which means not good at all. I hope the KO2's are better.
It would take an amazing tire to do better than the Firestone Destination MTs that I had siped for ice and snow, however I haven't hauled heavy with them. I would imagine they wouldn't be very good in those conditions if they weren't siped. In deep snow they just keep digging and plow on through. When new they even allowed me to push snow up a steep hill with the bumper.
