Originally Posted by GLankford
I've hit 22 on the highway with the air off and tailgate down with no headwind.
It has been scientifically prooven that driving with the gate down actually costs you gas milage.
I dont remember the exact details but its something to do with the way the bed will actually fill with a pocket of non moveing air and the rest of the air will flow over the tailgate. But when you drop the gate the bedsides work as two huge fins that distorte the air flow.