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An advanced technology 7-Component-Wind-Tunnel-Balance for the automotive industry has been developed by Carl Schenck AG, Germany and is now fully operational at the Volkswagen Wind Tunnel, Wolfsburg, Germany. The balance is based on the computer separated technology introduced by Schenck AG in the DNW wind tunnel in 1982. The seperation of the aerodynamic components inside the balance was performed -since the begining of wind tunnel testing- with mechanical separation systems. With the development of the computer technology it was possible to transfer this separation to the computer. This new computer separated balance has demonstrated outstanding performance and reliability. Common practice in automotive wind tunnel testing is to measure the four lift forces on each wheel pad, the drag force and yawing moment. The side force acting on the front axle and rear axle are calculated with the data given by the measured yawing moment and the theoretical wheel base.