SEOUL, South Korea—On-demand snow tires. Why not?
That's the driving concept behind Hyundai Motor Co. and Kia Corp.'s latest patent-pending tire design, which relies on shape memory alloy modules inside the wheel and tire to create "snow chains" at the push of a button.
"This innovation, which will hopefully be introduced on Hyundai and Kia vehicles someday, reflects our commitment to turning advanced technologies into real-world solutions that benefit customers," Joon Mo Park, head of advanced chassis development team. "We will continue to develop technologies that enhance safety and convenience of our vehicles and bring value to our customers."
When snow chain mode is selected on the cabin dash board, the tire automatically deploys the shape memory alloy "snow chains" to offer greater traction and safety in wintry weather. The chain links—located at regular intervals around the tire—are activated through an electric current system, which allows them to be raised above the tread and then lowered as needed.
During normal driving mode, the shape memory alloy links remain in an "L" shape, allowing them to stay below the tread surface. When the snow chain mode is activated, the memory shape alloy links from a "J"
And the added benefit? The auto makers say drivers easily can tell when their tires are worn.
"If the surface of the tire is worn down to the height of the module in normal driving mode due to severe tire wear, drivers can easily recognize this degradation so as not miss the tire replacement cycle," a news release stated.
