Bridgestone Battlax Sport Touring T30 Radial Front Tire 120/70ZR17 (003865) The T30 EVO is an updated version of the T30 sport touring radial Building on the response and stability of the T30, the EVO delivers more traction and control, especially on wet surfaces, by using new rubber compounds and re-engineered designs Tread grooves (rear) are modified to increase water channeling and to provide greater tread stiffness Contact area (rear) increases with lean angle, for increased grip when cornering Newly developed front and rear rubber compounds improve wet grip in a wider operating range