How effective are the "is" aerodynamics

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  • Wild Ride
    Mod Crazy
    • Apr 2008
    • 739

    #16
    Someone said Volvo? Nothing worse than a brick feeding you taillights!
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    • mcaden
      Advanced Member
      • Jun 2011
      • 164

      #17
      I recall once reading that BMW has never put a spoiler on a non-base model car that was not actually shown to improve or enhance performance. Sorry - I have no recollection where I read this.

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