I have been in some pretty sloppy conditions off road after it rained a few days and was forced to switch to 4-Hi to keep going but the only tires that would have made it in 2WD would have been true mud tires probably. I think they did a little better than stock in the mud. Road manners are very good and that is what I was looking for.
A couple days ago I was scraping some dirt off the sidewall with my foot and as I pressed my shoe down the side I saw the actual tread block deform some (enough to notice it) next to where I was pressing. I was thinking if the pressure from my foot on the sidewall was enough to deform the tread block a little (I had to be moving my foot to see the sort of wave or ripple in the tread) the sidewall must be pretty thin which would explain the light weight, good mileage and smooth ride. I haven’t tried that test on other truck tires but it got me to thinking if I drove in the woods or on construction sites or to dumps where the sidewalls could be exposed to stobs or rocks, I would be more comfortable with load range E tires and would get the KO2’s.
I am on pavement 98% of the time however and am still happy with the tires. Whether I will buy them again will probably depend on how well they wear. Good luck.