Yokohama Avid ENVigor ZPS Tire - 225/45RF17 91VThe AVID ENVigor ZPS gives you confident performance in all conditions, delivering a potent combination of excellent wet traction, responsive handling, and a smooth, quiet ride. This all season run flat can maintain that performance and stability for up to 50 miles at 50 mph with no air pressure, its a tire you can trust to get you there and back, mile after mile. Tire Features & Benefits Wet Traction Directional tread design and adaptive sipes