The Michelin Pilot PS2 ZP employs Michelin's Zero Pressure (ZP) technology
Zero Pressure Technology
Michelin® Zero Pressure tires feature a reinforced sidewall that is designed to support the weight of your car even after a loss of air pressure -- even with no air in the tire.* Michelin® Zero Pressure Technology allows you to continue driving up to 50 miles at 55 mph, so you don't have to change a tire on the side of a busy highway.
*Michelin® self-supporting zero-pressure (ZP) tires are to be used only with an operational, Michelin-approved, low air-pressure warning system.