The Forgotten Tire Technology That Could Drive Anywhere? Rolligon tires, invented by William Alby in 1951, are a unique type of low-pressure tire designed for traversing soft terrains like sand, snow, and mud. Inspired by the way snowshoes distribute weight to prevent sinking, these tires are inflated to just 7 psi - far lower than standard vehicle tires. This ultra-low pressure allows them to spread out over a larger surface area, reducing ground pressure and enabling vehicles to "float" over u