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Thread: Wind noise from external mirrors?

  1. #1
    Join Date
    Jun 2004
    Location
    Melbourne, Australia
    Posts
    1,305

    Default Wind noise from external mirrors?

    Apart from obvious road noise like tyres, the E34 is considered fairly aerodynamic & relatively well soundproofed, however I was wondering how noisy the stock external mirrors are at speed. Has anyone been able to determine if the M5 mirrors (being more aerodynamic) are quieter? I'm thinking some of the noise I'm hearing is actually wind noise coming from the mirrors themselves. To prove a point stick your hand out of the window at 120kmh+ (70mph+) and hear the sound it makes!

    1990 E34 535iA, 215,000kms (130,000 miles).
    Dual Climate, Rear Headrests, Rollerblind, M-Tech Wheel,
    Memory Seats, EAT Chip, T-Stars.

  2. #2
    Join Date
    Dec 2003
    Location
    Philly, PA
    Posts
    415

    Default

    I actually think my M5 mirrors are louder than the old ones. But its been quite some time so I'm not 100% sure. And they are BMW mirrors, not aftermarket.

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,843

    Default

    my mirrors have little dimples on the window side to help eliminate wind noise, when I got the car these things really baffled my mind...why would they leave these stupid bumps there? LOL
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  4. #4
    Join Date
    May 2004
    Posts
    485

    Default

    Jeff B,

    Could you pls. show us pics of your mirrors with the little bumps?

    Those bumps may be turbulators, designed to make little vortices which change the downstream airflow, thereby reducing noise. I'm very curious about anything that reduces noise.

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