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      10-28-2010, 06:37 PM   #5
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Drives: 2011 E92 M3
Join Date: Oct 2009
Location: Planet Earthenware

Posts: 164
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Originally Posted by kmarei View Post
i've smoothed many a kerb with those babies
my left side is gone
right side still hanging on

i think they are there to clean up the airflow
so if you get rid of them it might ruin your air flow, which might affect the handling
"clean up the airflow"? U mean they're supposed to improve aerodynamics?? Hard to believe with their square shape and they way the front hangs down flat against airflow.

What are these boxes called? Anyone ever replaced one? Cost?