As car brands continue to roll out unusual concept vehicles, tyre manufacturers are developing new wheels to keep up. We've rounded up six of the most innovative examples, including a 3D-printed spherical tyre made especially for self-driving cars, and a moss-filled wheel that converts carbon dioxide into oxygen. More
This 3D-printed concept wheel by tyre manufacturer Goodyear uses living moss to absorb moisture from the road, before converting it into oxygen through photosynthesis. More
Goodyear has updated its spherical tyres for self-driving cars, adding a "bionic skin" of sensors that reads the road and adapts to suit different terrains. More
Geneva Motor Show 2016: American manufacturer Goodyear has unveiled a concept for a "visionary" sphere-shaped tyre that could make driverless cars safer and smoother to run (+ movie). More
Israeli artist Tsibi Geva has wrapped his country's Venice pavilion in old car tyres and filled it with a mixture of found architectural and household objects to explore ideas about the home (+ slideshow). More
Scraps of rubber tyres create a shaggy coat around this narrow tower created by architecture students Matt Ritani and Declan Burn on a countryside sculpture trail in New Zealand. More
Design Indaba 2015: Royal Collage of Art graduate Ackeem Ngwenya has designed a set of all-terrain wheels to help farmers in rural Africa carry heavier loads to market and replace the traditional method of "head-carrying" (+ slideshow). More
Disused materials including tyres, burlap sacks and rope are recycled into footwear for the developing world in this project by Ravensbourne university students (+ slideshow). More