Federal Evoluzion ST-1. FEATURES AND BENEFITS: Summer traction; Enhanced controllability; High speed durability; Longer lasting tread life; . OVERVIEW: The Federal Evoluzion ST-1 is a performance and high performance, depending on the speed rating of the specific tire size, summer tire manufactured for passenger and performance vehicles.The tire promotes first-rate summer weather traction. The wet grip tire compound and the asymmetric tread pattern work together to ensure superb dry and wet weather road gripping ability. The compound increases the tire's wet and dry weather performance, while the tread design's larger tire footprint improves the model's road contact. The three wide and one narrow circumferential grooves effectively avoid hydroplaning situations by eliminating water from beneath the tire footprint, guaranteeing a safer drive.The better handling and controllability are due to the model's larger road contact area and excellent sidewall rigidity. As a result, the tire's steering responsiveness and driving stability are upgraded. The steering becomes swift and precise in its responsiveness to the driver's instructions, while the tire's shape is stabilized against the driving pressure. The high rigidity sidewall design also increases the cornering and maneuvering ability by maintaining its optimal shape under the driving pressure. The enhanced maneuvering ability ensures a better and more secure high speed performance. The reinforced sidewall rigidity improves the tire's high speed performance as well. It prevents deformation during the drive, allowing the tire to perform to its best capability.The Evoluzion ST-1 provides a longer lasting tread life. The tire compound slows the tread wear rate down significantly, lengthening the tread usability. The larger tire footprint manages to evenly distribute the driving pressure along the tire's surface. The equally spread out forces of acceleration, cornering and braking increase the tread life by preventing irregular tread wear formation across the tread area. In this manner, the tire is more cost efficient as it can be used for an extended period of time. Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold, the year of their manufacture will not shorten their service life.