Aerodynamic drag is the single biggest force working against a rider at race speeds. HED's engineering team has been measuring and cutting that drag since before most wheel brands existed. The process starts in the wind tunnel, where every rim depth, external width, and spoke count gets tested with tires mounted and inflated to real-world pressures.
HED established wind tunnel testing with mounted tires as an industry standard, and that methodology still drives every aero wheel in this collection. The 22.4mm internal width across the Vanquish series smooths the transition between tire sidewall and rim bed, reducing the turbulence that builds drag at high speed.





