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Old 04-26-2011, 07:00 PM   #15 (permalink)
instarx
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Join Date: Jul 2008
Location: NC
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Volvo - '00 Volvo V70 XC AWD SE
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You might be interested in this article where tire spats were evaluated for lift and drag on a Prius. Evidently drag reduction is very sensitive to size, placement, and angle. Make them too large and they can increase both.

Autospeed - Modifying Under Car Airlfow
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