With track performance at the forefront, Pirelli claims the SC tires focuses on line-changing agility, precision feedback, and the ability to change lines as needed to make passes, or block them.These are tires intended for racing conditions, and Pirelli assures us that a set of its Scooter SC tires will last an entire race without degradation of grip. The tires can be used in intermediate wet conditions, though they are at their best when the track is dry. While scooter racing hasn’t taken the United States by storm, it is a popular form of low-cost road racing in many parts of the world.There is only one front and rear tire size combination, and they are for mounting on 12-inch rims. The front is a 100/90 and the rear a 120/80. That means the Pirelli Diablo Rosso Scooter SC tires will fit the Vespa Primavera 150, Vespa Sprint 150, and Yamaha Zuma 125, for example, and these new Pirellis should help you explore the outer edges of performance.