Quote:
Originally Posted by CFECO
The air would go through the wheel, and exit out under the rear of the car, filling in some of the "vacuum" at the back.
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You almost nailed it. The air is drawn inward through the wheel, directed up and back over the top of the tire, pointing outwards, and then bent back, down and rearwards to jet out the back through narrow horizontal slots on the underside.
They did this to a stock Fiat Punto. Talk about extreme aeromodding!
Of course it does help if you've the University of Turin windtunnel, and a few unemployed supercomputers to do your Navier-Stokes