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139 0304 Aero 13 Z

A flat nose will create a pressure front much like a bubble. This jams up the air trying to flow over and around the car and causes turbulence. More air is forced under the nose of the car, and the air flowing around the sides will be disturbed.
Aerodynamics - Stock Car Aero Defined

A flat nose will create a pressure front much like a bubble. This jams up the air trying to flow over and around the car and causes turbulence. More air is forced under the nose of the car, and the air flowing around the sides will be disturbed.  View Related Article

 

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