Tonneaus
Our new truck doesn't have a tonneau cover for the bed, and we're thinking that it would probably improve aerodynamic performance (and mileage) if it did. Does anyone have experience with adding one ...
Forum Discussion
I just googled the subject.
Consumer reports test showed adding a tonneau cover, and or dropping the tailgate DECREASED fuel mileage by a little over 4%.
http://www.consumerreports.org/cro/news/2013/08/pickup-truck-tailgates-and-fuel-economy/index.htm
mythbusters confirms it too.
http://www.dakota-durango.com/forum/showthread.php?t=117618
Consumer reports test showed adding a tonneau cover, and or dropping the tailgate DECREASED fuel mileage by a little over 4%.
http://www.consumerreports.org/cro/news/2013/08/pickup-truck-tailgates-and-fuel-economy/index.htm
mythbusters confirms it too.
http://www.dakota-durango.com/forum/showthread.php?t=117618
