Its no surprise that top athletes like chris mccormack who has won at kona on the zipp tangente and the women of team exergy twenty12 are seeing the benefits of tangente aero tires after all your tires have the highest airspeed of any part of your bike and the front tire is your machines leading edge it took zipp 14 months and two trips to the wind tunnel to get it right resulting in the 21 mm version of the tangente saving up to 9 seconds over 40 km compared with a traditional non