Quote:
Originally Posted by Nelson
I've read in a number of different places that lowering your car reduces wind resistance generated by under car turbulence and can thus lead to measurably improved fuel economy.
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That turbulant air under the car acts to increase the total frontal area, or the size of the hole the vehicle must punch through the air. Lower the car = Reduce the <effective> frontal area.
Something else to consider: You have to be careful lowering your car... it's easy to screw up the alignment, create a servere bump steer condition, and do all sorts of things that can result in increased rolling resistance, negating the net effects of reduced frontal area, and maybe going the other direction by wearing out the inside of your tires prematurely (read: cost you more to drive per mile)