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      06-16-2007, 10:27 PM   #48
bimmerFUD
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Drives: 2007 E90 335xi
Join Date: Jan 2007
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Quote:
Originally Posted by murellus View Post
yes your ears feel a pressure change but it's very small, a couple psi at most. 10psi vacuum over the upper surface of the car at highway speeds would be bad bad bad.
My estimate was 10 psf, not psi. 10 psf = 10 / 144 psi. Your eardrums can rupture at 5 to 10 psi sudden changes, so "a couple psi" is quite a bit.
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Last edited by bimmerFUD; 06-16-2007 at 10:32 PM. Reason: added "sudden changes" to be clearer
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