Performed at A2 Windtunnel using exacting protocol. Continental GP4000 SII tires were chosen because of wide use in both application and testing. Tires were inflated to 100psi and double checked before each run. 0-20 degrees of yaw at 2.5 degree intervals. Interval value is the average of 2 time stamped data collections at each yaw position. Wind speed of 30mph. These controls have been used for dozens of cycling product manufacturers, including brands we tested against.