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Old 01-08-2021, 06:41 PM   #8 (permalink)
aerohead
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Porsche

Quote:
Originally Posted by JulianEdgar View Post
That may not be true. Porsche, for example, reduce drag with their rear spoiler. My Insight has measured reduced drag with its custom rear spoiler.

Without seeing the test data, it's impossible to say whether the spoilers on these cars increase or reduce drag.

Rules of thumb and guesswork in car aero is not a good idea.
Which one?
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