Thread: Tonneau Cover MPG improvement?
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Old 09-12-2008, 02:48 AM
schaf921 schaf921 is offline
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Default Re: Tonneau Cover MPG improvement?
Mythbusters did a show on this - they compared two trucks, one with tailgate down and one with tailgate up. The up tailgate formed a circular wind current in the front of the bed that provided more aerodynamics and increased MPH over the tailgate down. I would assume having the cover in place kills the aerodynamics formed as well. From their findings, I would say you should lose mileage with one installed
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