The Ultra High-Performance, All-Season Tire With Carbon Fiber Reinforced Sidewalls For Crisp, Responsive Handling. The next evolution in Goodyear Carbon Fiber Technology is here. The Eagle F1 All Season ultra high-performance tire lets you take command of your driving experience by offering crisp, responsive handling on dry roads. Carbon Fiber reinforced sidewalls help reinforce both sides of the tire to help maintain enhanced contact with the road during turns for exhilarating control. And TredLock Technology offers superb all-season traction for confident driving on rain-soaked and snow-covered roads. The Eagle F1 All Season is for drivers who want the thrill of high-performance driving all year long!