The Tiltread is a tire split into three parallel ring sections, each mounted on a corresponding split section of wheel. As the wheel turns and leans, the three tire sections are individually raised or lowered, allowing them all to maintain traction with the road surface -- similar to how a motorcycle's tire grips the surface of a road while it's turning.
The Motiv is an off-road tire design which features numerous height-variable, non-pneumatic tread blocks that can adapt to extremely rough terrain without risk of blow-out.
The eMembrane is an eco-friendly tire design, which allows the tire to sit on two edges of the wheel -- similar to a hockey skate's blade. At low speeds, it reduces friction from the tire and ground, allowing the vehicle to travel further while using less energy. At high speeds, the tire's edges expand -- via centripetal force -- allowing for maximum grip and handling. It also has easily removable tread components, which allow consumers to replace worn-out tread when required, rather than the whole tyre carcass -- reducing tyre waste and landfill.
The Mag-Trac tire allows for a smooth ride. The tire is suspended via a megnetic field, allowing the inner rim to move freely when the tire travels over a road bump or pothole.
My personal favorite is the Tessela, as I think it's the most likely to be turned into reality; and has the most practical use out of all the concepts. It allows for fuel efficiency, and with today's gas prices, everyone is looking for ways to save. I think we'd see more of these tires on all types of vehicles, rather than a split wheel that really only has use in the racing world. It'd be awesome to see these tires come to life; considering I work in the car industry, it'd be something neat to look forward to.