Thread: Tonneau
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Old 03-30-2010, 06:53 AM   #14 (permalink)
KamperBob
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Join Date: Dec 2009
Location: Somewhere USA
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Black Stallion - '02 Toyota Tundra 4WD xCab

Half Pint - '06 Yamaha XT225
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Quote:
Originally Posted by JacobAziza View Post
Having driven with the cover tilted for several months now, and having made no other changes to the truck or driving style (save the most recent tank when I started P&G consistently for the first time) I can say with relative confidence that I did gain roughly 2mpg by tilting the cover.
Before my average was 26, and running empty all highway max was 28
After my average jumped to 28, and my new best was 30.

I also found the thread about the free virtual windtunnel software simulator, and tried it out for open bed, covered, and tilted cover.
Granted it is totally imprecise and inaccurate and unscientific, but no matter how I changed the parameters, tilt clearly had cleaner airflow than open or flat cover.
Cool!

I agree that utility is the must-have requirement of a truck. Getting the best MPG possible is just extremely nice to have.

Could you share a link to that wind simulator thread you mentioned please?

Thanks
KB
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