The Desser Aero Classic 22/8.50 x 6 smooth Tundra are the ones I will buy next to replace my 21/8.00x6 ribbed tires. A good friend, Floog, has been running them for 700+ hours and seems to be happy with them. They are a good fairly large tire that you can run with tubes at 12-15 psi, inexpensive, and good for dirt, grass, reasonable gravel bars, etc. Also I hear they wear well on pavement too. About as good an all-around tire I know of. Can get them thru Kitfox as well as Desser.