Constructed with XC racing and high-mileage trail rides in mind, the Mezcal III G2. 0 XCR Tire is especially savvy on hard-pack trail surfaces. The alternating center tread keeps rolling speed nice and zippy, while cornering knobs still offer an effective edge for the inevitable unsupported corners. Vittoria's XC Race casing offers lightweight puncture protection, but priorities rolling speed for overall efficiency.