Vittoria Rubino G Road Tire. The Vittoria Rubino was already a superb all around training tire, but with the advent of groundbreaking technology involving the revolutionary material Graphene the latest generation has upped the ante yet again. The result is the Vittoria Rubino G Road Tire. 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, Rubino G tire. Additionally, the Rubino G features Vittoria's 3 Compounds 3C technology which is a layering process that uses three separate compounds in the same tread. The 3C 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 a high performance tire. There is also Vittoria's nylon casing that delivers Vittoria's legendary handling, speed, and comfort plus the strength that's provided by non cotton fibers. Add in a slightly thicker tread layer for enhanced puncture resistance and you've got all the ingredients for a tire that can handle the rigors of high mileage training.