Recumbent

The Recumbent Bicycle and Human Powered Vehicle Information Center

Most
of the information about car aerodynamics seems to be centered around generating
downforce. While this may be needed for race cars, the average 3000+
pound car driving at speeds below 90 MPH does not need to be concerned
with downforce. If you are trying to improve the efficiency of your
vehicle, reducing the
coefficient of drag (Cd) should be the main
concern. 



Rationale 




In this day and age of expensive fuel and inefficient vehicles, it makes sense
both economically and ecologically to conserve as much fuel as possible. To
accomplish this, you could go out and buy another car with better
mileage, but there are other options. This article focuses on how to optimize your current vehicle. 


The example vehicle is a 1998 Nissan Maxima. This is a rather boxy
4 door sedan with quite a lot of ground
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