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      03-05-2013, 01:25 PM   #3
PrimeBMW
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Drives: E46 M3+S62, E92 M3
Join Date: May 2009
Location: Portland, OR

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Brake cooling/ducting can only help. Is it an issue with the e92 M3? Yes if you push the car and/or run a sticky tire. I would say at the least it will keep pad and rotor temps lower and thus prolong their life/saving you $$$. Eventually a BBK would be smart if you intend on tracking quite a bit.