My Dad has had great success with the original KO's, but they changed the rubber compound with the KO 2 and really shortened their life. Tzone is correct; traction sucks.
I made one attempt at liking the KO2's, two out of four tires would not balance, returned them for two more and they half-assed balanced there was one that continually caused a vibration/shimmy and it took a LOT of weight just to get them to that point. I wanted to like them, but a lesson was learned.
