Quote:
Originally Posted by Boomer 2019
I also don't understand why BMW has covers over these vents in the first place. They don't completely block the flow, just reduce it by what appears to be about 50% -70%. They do state clearly that the covers need to be in place during all driving other than on a track, but I have not seen a reason stated for this. Anyone?
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As
Ximian said - it's to keep crap out of your rotors. I just did my first detail after 900 miles and decided to remove the covers. I have the carbon package so these intakes are vacuums for leaves, pebbles, dead bugs, and even a screw. Im glad that didn't get shot into my rotor/wheel/heat shield.
Was originally thinking of taking these off for spirited back road drives - but now I think I'll leave them on 100% of the time except for track days.