Yes the GM that was at DWT was involved in the tire designs, He left and is one of the owners of GPS offroad products in Las Vegas if you look at their sand tire it looks like the doonz but in a 27". Extremely light weight and perfect for the dooner that is out to just have fun. They also are the Manufacture of the Sand stripper a long with the V roll from what I hear. We have been selling their sand tire kits for the same reason they are priced right and work very well.