Accelera's PHI R holds the same features as its predecessors (the PHI and PHI 2) but has an updated tread design. The PHI R is equipped with a triple rib that enhances stability when accelerating as well as steering responsiveness. This versatile tire is ideal for street-legal racing as well as everyday driving. Additional sipes furnish the tire in order to minimize noise levels while shoulder blocks optimize cornering and maneuvering stability. The Accelera PHI R is a premium choice for drivers seeking an adaptable, high performance tire.