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Originally Posted by Frank Lee
Here's that article that had the comment about '94-up Chevys having more aero drag with the mirrors removed: Car Aerodynamics - Hot Rod Magazine
I trust the article cuz the aero guy has good credentials. |
I will quote the article...
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The '94-up Chevy Impalas and Caprices are notable exceptions; on those cars, the Cd actually gets worse when you remove the mirrors.
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lets read that again, but just the interesting part...
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the Cd actually gets worse
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What is aerodynamic drag? CdA. The Cd can be higher, but that doesn't mean the drag forces go up overall. Mirrors are more or less 5% of the frontal area. On a .30 Cd car that's a 15 points Cd increase needed to offset the gains from the reduction in area.