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Old 02-08-2013, 07:37 PM
sdamike sdamike is offline
Dodge Ram Forum Newcomer
Join Date: Feb 2013
Location: NY
Posts: 14
Gender: Male
Vehicle: 2004 Dodge Ram
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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sdamike is on a distinguished road

I know this may sound a little weird but heres my input on this. I just bought my ram and it had a tonneau cover on it, its older and just fabric / vinyl and a little worn out but no rips or tears just older and maybe a little stretched. At faster speeds I could see the cover moving in the wind, kinda up down up down etc... air was somehow still getting under there or it was no longer tight enough and the air on top was able to push it down at thruway speeds. I found a cheap fiberglass cap on craigslist and just went to go pick it up the other day. On the way there was getting a horrible 14 mpg on the way to pick it up. On the way back I never went lower than 14.5 mpg. (still horrible lol) Maybe its just coinencidence but Im wondering if getting rid of that buffeting on the tonneau cover and smoothing out that air flow at the rear helped the mpg a litte?
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