the ultra lites and superlight smoothies are intended to be used strictly for drag racing only, they are a ton lighter than the regular haulers, but will not hold up to normal dune riding. It's not a very good picture, but you can see the superlite smoothies on the drag bikes in my profile, they are shaved from bead to bead, and are almost paper thin, also they do not hold there air pressure too long, you can put air in over a weekend and by the next weekend they are about totally flat. I would definetely not recommend this tire for anything except strictly drag bikes.