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Any semi truck drivers here..mpg questions.

Discussion in 'Fred's House of Pancakes' started by ataylorracing, May 22, 2012.

  1. ataylorracing

    ataylorracing ataylorracing

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    I am seeing more and more semis with a sheet of plastic(?) going from the front of the trailers to just in front of the rear dual axles to get better aerodynamics. How much do they help? I noticed on a single truck a few months ago an added on aero package on the rear of the trailer, making it tappered...never saw another one. Speak up, I KNOW only a very few tail gate while the biggest problem are the four wheelers.
    :welcome:
     
  2. Chuck.

    Chuck. Former Honda Enzyte Driver

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  3. massparanoia

    massparanoia Active Member

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    They are trailer skirts. Good for about a 5+% increase in economy. Those and supersingle tires make a pretty big difference.
     
  4. ataylorracing

    ataylorracing ataylorracing

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    I knew that both mods would be good for something....thanks guys. I still remember when they started putting huge spoilers on the cab to help the aero traits of the rectangular shaped trailer they were towing.