The problem is they have a built in dam along the edges, if you look at the tread, on the outside of the tire there is a blockage where there is no way for the water to shed out the side of the tire........this because very obvious to me when I had the KO's as they hydroplane VERY easily in only 1/4-1/2" of water or so, mostly on the higway.
I did like the on road feel and their ability off road, also the extremely tough sidewalls. But for the $$$ I have found other tires that are just as good and cost WAY less.
I run some Courser LT 31x10.5 and they out perform the KO in treadware and do just as well off road, for about 2/3 the cost............no hydroplaning issues..........
I have a friend in the tire business out here, he has helped me out alot finding the right tire for me, he is an avid Jeeper.....
MY friend Joe really seems to like his new BFG MTR's though....we shall see about treadware. I just cant bring myself to mount up some MT's since I do 95% on the street..........