Tires, by their nature, are vulnerable components on any vehicle, though some are more robust than others. For vehicles in situations where a lot of abuse is possible, airless tires have been explored as one possibility to eliminate the hassle (and potential harmful) issue of flats. Real-world usage of airless tires has been close to nil, however, and the technology has seen many years of gradual refinements. The Polaris Sportsman WV850 H.O. changes this, coming with TerrainArmor airless tires.