Airless tires have taken a huge step towards coming closer to production thanks to the Hankook iFlex tire having gone through many high speed tests. This is the companies fifth attempt at bringing tires without air to the market and with it comes numerous benefits to the environment in comparison to using the conventional tires. –
See more at: http://interestingengineering.com/airless-tires-are-coming-closer-to-reality/#sthash.da6L6zr2.dpuf