Zipp Tangente Clincher Tires 700x21 Given how long we've been making the world's most aero wheels, designing an aero tire is so obvious that we're a little embarrassed we didn't do it until 2006. But we've made up for lost time with the Zipp Tangente, the first tire developed in the wind tunnel. In its tubular incarnation, this tire simply flies. To cut through the wind, we've used our patented ABLC dimples to mitigate the "un-aero-ness" of a round shape at the wheel's leading edge. It took us 14 months and 2 trips to the wind tunnel to get it right, but the dimples will save you 1-3 watts, or up to 9 seconds over 40km. That's a big deal. But the Tangente is not just a delicate special event tire. Thanks to our partnership with Vittoria, the Tangente sports a durable yet supple 290tpi casing. Because the dimpled pattern resists cracking so well, we're able to use an exclusive an extra-light rubber compound for low rolling resistance and high cornering grip in wet and dry conditions. The Tangente's 21mm width optimizes aerodynamics, cornering ability, and durability. Average weight 245g, +/- 10g. 38mm, overall length, approximately 34mm functional length. Includes tire pressure chart to optimize rolling resistance by rider weight and front/rear use. Now available in 23mm for heavier riders Tire pressure Not to exceed 125 psi/8.6 barTire inflation pressures are recommended for optimal rolling resistance and grip. These pressures are for room temperature tires and rims. Tire pressures may increase as much as 25psi due to high rim temperatures caused by prolonged braking or as much as 5psi from high ambient or road surface temperatures. Tubular version available.
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