Lightweight Fernweg evo 63mmLightweight Fernweg evo. Material: Carbon Ekrar: 20st Profil: 63mm Aero The advantages and disadvantages of an Aero wheel set When it comes to aerodynamics, wheels play a decisive role, but only at high speeds from around 40 km h. Rim height and aerodynamics are inseparably linked. The high rim dissipates the airflow better, thus ensuring less drag and you can put more speed on the road. Additionally every racing bike with high profile wheels looks