Vittoria Terreno T70 Coarse Loose Tire - 700 x 40 Tubeless Folding BLK/Brown Gravel Endurance Graphene G2.0Vittoria Terreno T70 Coarse Loose Tire 700 x 40 Tubeless Folding Black Brown Gravel Endurance Graphene G2. 0. The Terreno T70 Coarse Loose Gravel Endurance tire brings World Championship winning mountain bike technology to your gravel rig. Adapted from the proven Mezcal XC tread design the T70 delivers XC race level speed and grip and is now optimized for coarse loose gravel. Built from the Endurance Formulation powered by Graphene the T70 tread