Quote:
Originally Posted by Dragoneye
Supposedly, and I don't have any data to support this...but supposedly those "wings" i.e. Bookshelves, Shopping cart handles, w/e  Don't actually help anything untill speeds of about 140-160 mph...
heard it from one of my professors, so 
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yup, a lot of spoilers/wings wont give enough of an added effect of downforce to make them worthwhile, hell the veyron actually has to lower its spoiler to get above 250mph. lol