Only have 4k miles on these, but they perform awesomely. I have had them in the sands out near Wickenburg/Morristown here in Arizona, and on the trails and rocks up by Sedona. I would deffinitely buy them again.
I drive my Jeep every day for work and out to play on the weekends. So far these tires have been great and have never given me reason to doubt their capabilities.... I doubt myself more.