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Old 04-22-2020, 11:07 AM   #19 (permalink)
aerohead
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road trips

Quote:
Originally Posted by COcyclist View Post


The VW GTI alloy 9 spoke rim gave me the best mpg in 2 days of testing and previous extended road trips. The alloy rims alone were better than with flat coroplast wheel covers.

Edit- It turns out this statement may be slightly misleading. Read on
The likelihood of isolating the drag contribution of wheels on a road trip is highly dubious.The SAE would never say it's even possible.This would be something which could only be confirmed in a wind tunnel.And the same wind tunnel,if done on separate days of testing.
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