Your tires have the highest airspeed of any part on your bike, so it makes sense to go aero. Zipp's Tangente uses dimples to slice through the wind; in fact, the 21mm version saves up to 9 seconds over 40km compared to a traditional tire. Developed in the wind tunnel in partnership with the masters at Vittoria, the Tangente sports a durable, yet supple 290tpi casing with an extra-light rubber compound for low rolling resistance, a smooth ride and high cornering grip in any and all conditions.