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Old 02-28-2012, 09:24 PM   #4 (permalink)
slowmover
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Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,442

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
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Quote:
Originally Posted by aerohead View Post
Just a quickie,based on T-100/Dodge research
*Flatbed ------------------------- Cd 0.668
*Suburban type roof (Lear cap)---- Cd 0.39
*Pickup bed (open)---------------- Cd 0.44
*Full tonneau --------------------- Cd 0.415
*GM' Half-tonneau -----------------Cd 0.357
*Texas Tech Aero Shell ----------- Cd 0.352
*ITworks double-geometry shell --- Cd 0.325
*Complete boat-tail -------------- Cd 0.12
I'm surprised that a bed topper (cab-height, flush-fit) shows so well. I was under the impression it was "worse than" a full tonneau cover.
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