IMHO Radial iroks are worthless turds. I have run damn near every tire on the market and the 37 14 17 isuk radials were the worst tire all around. The bias are a bit better in the rocks, but they are both terrible on the road. I just sold my iroks and went back to 35in km2's and my truck no longer drives like a radio flyer wagon. Iroks are worthless when wet and pointless to drive on the road. Only good thing i have to say about them is that they are tough as nails. Never had a flat and never carried a spare.
I cant say enough about how good km2's work for what I do, mostly highway miles, lots of crawlin, dry and wet rock, and whatever else looks fun to drive over. Km2's suck in the snow, but are decent in mud. Sidewall thickness is the only downfall, but carry a spare and get the road hazard warranty and they are the best tire out there for long life and best traction.
