The focus of the P Zero Race is entirely on maximum performance. The tread design is identical to that of the tubeless-ready version of the same name, as is the rubber compound used. The P Zero Race is made from the new SmartEVO compound. With over 110 years of experience in motorsport, Pirelli has developed a blend of three functional polymers with "intelligent" properties that form the basis of SmartEVO's outstanding performance. Each of the three polymers has specific performance characteristics. In combination, they guarantee the optimal balance of grip and rolling resistance. However, completely new for this model is the nylon carcass construction with 120 TPI, designed for use with a tube and in accordance with the new standards for 19C rims (internal rim width) according to ETRTO. Not compatible with hookless rims!.