Cd (drag coefficient) and Cl (lift coefficient) are used to characterize a vehicle's aerodynamic performance. These coefficients have been traditionally determined by wind tunnel tests. However, SC/Tetra has been validated for calculating aerodynamic performance with minimum error compared to experiment data. SC/Tetra can model precise underbody details and pipes due to its highly tuned solver that consumes minimal memory. Software Cradle is dedicated to continually improving SC/Tetra's accuracy and capabilities. The company also provides technical support by conducting complex, high level simulations for its clients.