Vittoria corsa speed g road tyrewith the g isotech graphene and 4c compounds the vittoria corsa clincher tyre offers excellent grip durability and puncture protection this is a first class tyre that pushes the limits of versatility offering you the very best in tyre performance graphene plusgraphene is a revolutionary material in the form of a very thin nearly transparent sheet of pure carbon in its extreme form it is as thin as a single atom 11 000 000 000th of a metre vittoria use