Quote:
Originally Posted by bluemark81
Another thing I notice with this car vs my E90 is when I close the sunroof on my F30, there is no pressure change like what occurred with my E90. Each time I closed the sunroof on it, my ears popped due to the pressure change which would suggest how wind tight that car was vs the F30. Absolutely no change in pressure with the F30.
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All cars are vented to atmosphere so door gaps, window seals, etc. shouldn't have any perceptible impact on cabin pressurization. Open windows and sunroof obviously WILL have an impact, but not when everything is buttoned up. I can't explain the ear popping unless you had the A/C or ventilation cranking and not on recirc. Even then the pressure would be very low.