Yokohama Tire Corp.’s AVID ENVigor now comes with the company’s run-flat technology. The AVID ENVigor ZPS (Zero Pressure System) comes in five sizes. Yokohama says the tire delivers high-performance and security, and can be driven up to 50 miles at 50 mph after the loss of air. The new ZPS version delivers, in addition to its run-flat advantage, the same benefits as the original ENVigor.