Engineered to provide maximum performance both on road with road-specific tire pressures and on the racetrack with racetrack-specific tire pressures (recommended 33 psi front and 30 psi rear when tires are warm) Dual compound front and rear layout applied on state-of-art profiles combine outstanding racetrack performance with ultimate riding pleasure on road Featuring the latest evolution of the patented FLASHÖ tread pattern designed to enhance homogeneous thrust at any lean angle. DIASCV4 180/55ZR17 (73W)