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Thread: Just took possession of '18 M2. Aerodynamics question.

  1. #1
    Join Date
    Oct 2004
    Location
    Swansea, IL
    Posts
    12
    My Cars
    '18 M2, '99 M Coupe

    Just took possession of '18 M2. Aerodynamics question.

    This is my 10th BMW (I'm old). What is the purpose of the vertical slits on the outside edge of the front bumper cover? On older models they were further inboard and fed cooling air to the front brakes. These exit near the outside edge of the front tires. Puzzling.

    Bill
    BMW CCA member #9643
    15 miles east of the Gateway Arch

  2. #2
    Join Date
    Feb 2013
    Location
    Jacksonville, Florida
    Posts
    37
    My Cars
    2000 BMW 323Ci
    Quote Originally Posted by M Coupe 1 View Post
    This is my 10th BMW (I'm old). What is the purpose of the vertical slits on the outside edge of the front bumper cover? On older models they were further inboard and fed cooling air to the front brakes. These exit near the outside edge of the front tires. Puzzling.

    Bill
    BMW CCA member #9643
    15 miles east of the Gateway Arch
    Those ducts funnel air through the bumper and release it right next to the front wheels, creating an "air curtain" that reduces the aerodynamic drag.

  3. #3
    Join Date
    Oct 2004
    Location
    Swansea, IL
    Posts
    12
    My Cars
    '18 M2, '99 M Coupe
    Thanks. I appreciate your response.

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