Hankook Revolutionizes the Wheel with Its All-Purpose Sphere!

An old adage says it is impossible to reinvent the wheel, but in the world of tires, pushing boundaries is part of daily life.

Hankook takes on this challenge with its spherical wheel, showcased on the robotic platform WheelBot 2 of the two-seater vehicle PathCruizer. This technology goes far beyond the simple shape: it completely eliminates the traditional axle and the direct mechanical link between the vehicle and the wheel.

Each spherical wheel is autonomous, held within a motorized support that allows it to rotate in all directions. Inside, several electric motors simultaneously orient the sphere according to precise vectors. Sensors continuously measure the position, angle, and rotational speed, while control software coordinates all the motors to maintain the vehicle’s balance and trajectory. The result is multidirectional movement—lateral, diagonal, or rotation on the spot—that is impossible to achieve with conventional wheels.

Why a sphere?

This architecture has major implications. First, it transforms maneuverability: a vehicle can weave through extremely tight spaces, ideal for airport terminals or urban hubs. Next, it relies on a precise synergy between mechanics and electronics: the slightest error in motor coordination or sensor readings could compromise stability. Finally, it paves the way for autonomous driving systems where each wheel becomes an intelligent module, capable of instantly adjusting its orientation and speed to optimize trajectory and traction.

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Innovation

• 03/10/2025 10:51

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Meanwhile, Hankook is exploring the “Sustainable Concept Tire,” a 3D-printed tire made from recycled and renewable materials, whose organic shape optimizes efficiency.

With the spherical wheel, Hankook demonstrates that it is possible to fundamentally reinvent an element thousands of years old by combining electronics, robotics, and advanced design to imagine mobility that is more flexible and adaptable to the constraints of modern cities.

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