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  #31  
Old 08-03-2013, 08:50 AM
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Yeah, it is a good read. It always seemed to make sense that a cover would reduce drag. They also did the tailgate down thing, which seemed to not make a huge difference either way.

The problem is, the covers did reduce drag, but what affect does this have on fuel mileage. Also, how does the added weight affect fuel mileage. Its hard to say and that's why probably it doesn't make a noticeable difference either way. The entire idea is to keep stuff in you bed dry or not get stolen, that's what their purpose really is.
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  #32  
Old 08-03-2013, 10:00 AM
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Originally Posted by Ramzaq View Post
Not sure if most responders looked at this link in my original post.

http://www.tonneau-covers-online.com...%20Savings.pdf

I know it sounds like an ad for tonneau covers but it is a study done in wind tunnels of several different covers on Ram, Ford and Chevy pickup trucks.

It is an interesting read.
Thanks for sharing, interesting. I read another study quite a while ago that actually drove the trucks over the same section of road within a very close time span, with and without tonneau covers. While they did not measure the coefficient of drag, there mpg drop conclusions were very similar to what this study extrapolated. While interesting, I still conclude, the slight gain in MPG is not significant enough to make a buying decision, solely on potential mpg gains.
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  #33  
Old 08-04-2013, 12:26 AM
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so do the covers with the wing in the rear lower mpg?
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  #34  
Old 08-04-2013, 10:28 AM
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so do the covers with the wing in the rear lower mpg?

Oh no, here we go.
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  #35  
Old 08-04-2013, 10:42 AM
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hermes........some one had to ask lol
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  #36  
Old 08-04-2013, 07:20 PM
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LOL! Indeed and yet no answers.
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  #37  
Old 08-04-2013, 07:36 PM
PaulMys PaulMys is offline
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Originally Posted by Hermes1 View Post
LOL! Indeed and yet no answers.
Alright, Bruce. Bolt a wing on the Sport, and carefully record the data!
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  #38  
Old 08-04-2013, 10:49 PM
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Alright, Bruce. Bolt a wing on the Sport, and carefully record the data!
I walked into that one. OK I'll get back to you...NOT!
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  #39  
Old 08-05-2013, 01:42 AM
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guess i will never know.
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