Vittoria Corsa Pro Tire - 700 x 30 Clincher Folding BLK/Tan Graphene + Silica G2.0Vittoria Corsa Pro Tire 700 x 30 Clincher Folding Black Tan Graphene + Silica G2. 0. The Corsa Pro tire is the choice of the pro peloton now even faster and with increased wet weather grip and puncture resistance. Graphene + Silica compound ensures speed and confidence through a range of surface conditions for the ultimate control Proven cotton casing material wrapped in a revolutionary new construction process provides the foundation for the new