As a racer in tin tops, and some one who builds and engineers their own cars, including doing some basic wind tunnel modeling..... the bonnet deflection on a touring car makes zero difference to the aero. The deflection is just because there is only a couple mill thick piece of sheet metal with near zero re-reinforcement via bracing or defined kinks in the metal.
On some fancy leman type prototype... maybe. but not a touring car.
|