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      06-20-2018, 01:22 PM   #4
ezaircon4jc
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Drives: 2019 540i M Sport
Join Date: Jan 2015
Location: San Diego

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Quote:
Originally Posted by Brian Edward View Post
So it is designed to deflect some of the air over the car and some basically into it?.?
I would say designed to divert most of the air over the car (past the hole in the roof) so the occupants don't get wind-blasted. It also helps keep dust and dirt out of the car (while driving, of course) as well as aerodynamically (though not to a great extent).
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