B-b-but beating dead horses is what we do here.
Instead of your fellow racers, consider Prof. Morelli's wind tunnel research.
https://ecomodder.com/forum/showthre...ail-33283.html
The thread has been 'Photobucketed' but if you dig deep enough you find his solution was to place an impeller in the wheel that sucked air in through the wheels center which filled the wheelwell and then exited through a Coanda nozzle to wrangle the turbulent flow around and behind the rear tires.
That how the scientist do.