Vittoria Corsa G Tubular Road Tire. The Vittoria Corsa tubular road tire is a living legend with a championship pedigree second to none. Not satisfied with resting on their considerable laurels, however, Vittoria has continued to improve this exquisite tubular with the introduction of the Corsa G edition. The Graphene in Vittoria's G Isotech tread compound is a nearly transparent sheet of pure carbon mere atoms thick. Prior to the development of Graphene, there was always the limitation of choosing between optimizing for speed, grip, durability and puncture protection. Effectively, the introduction of Graphene allows for natural material barriers of rubber to be removed, which means that there is no longer the need for such compromises between speed, grip, durability and puncture resistance. All these features now co exist in a single, Corsa G tubular. Additionally, the Corsa G tubular features Vittoria's 4 Compounds 4C technology which is a layering process that uses four separate compounds in the same tread. The 4C process offers unmatched versatility, by allowing for separate base and surface compounds in both the center and side areas of the tread. Benefiting from the different properties of each compound, including the G Isotech, their distribution has been extensively tested to deliver the best tire imaginable. There is also Vittoria's Corespun K casing that uses alternating Polycotton and Kevlar threads at an unbelievable 320 TPI, delivering incredible suppleness. The casing, combined with the latex inner tube, conforms closer to the road's surface, providing a smoother ride and better grip. All things considered, the Vittoria Corsa G is in a class all its own when it comes to competition grade tubular road tires.