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Old 11-06-2018, 09:17 AM   #12
03Roadking
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Join Date: Aug 2016
Location: Summerfield, NC
Posts: 38
I do agree that there is a negative effect on aerodynamics at the back of a vehicle that reduces fuel economy. That's why you see some large tractor trailers with those "tails" to smooth the airflow at the rear of the trailer. That being said I would think its not a one shoe fits all when it comes to a pickup. Cab design and bed length, I would think would play a role in the air flow over the bed and tailgate. Either way I haven't found a significant difference with the tailgate up down or with a bed cover.
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