Quote:
Originally Posted by SmellyCat
I install rear wheel skirts and ground skirts and a rear spoiler. Is there a chance I've created more drag? What if I seldom drive over 50 mph. Could the front skirt and grill block possibly create more drag at low speeds? Sc
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For the mods you've mentioned,the rear spoiler would be the biggest candidate for a potential drag increase.The spoiler's upward inclination angle would be the most critical factor.
As far as speed goes,if a mod is providing a drag reducing function,it's going to be that way over the entire speed range of the vehicle.
At 50 mph,your rolling resistance would almost be as critical to mpg as aero.At higher velocities the aero drag would dominate.