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Originally Posted by Vanquizor
Not sold on the wheel covers... our 4 tire change was under a minute last time we practiced, it would be tough to convince me the aero gained would make up for the time it took to peel off the covers and re-install them.
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You could make some holes in the wheelhubs where the bolts are.
A hinge could make the wheelskirt swing aside / up.
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I've been eyeballing the back of the car, and I wonder what gains there would be going to a fastback. I thought I read somewhere that if you end up with an angle between 15 and 30 degrees it was worse for drag then cutting a steeper angle and letting the air seperate.
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Yes, drag increases as the angle of the rear window increases, then drops again when the angle is steep enough (hence the Kammback).
You'll find more aerodynamic illustrations here :
Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - Piwoslaw's Album: Aero drawings