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      09-20-2012, 08:26 PM   #2
DallasBoosted
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Drives: '08 E92 335i
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The total heat generated will be the same no matter what size brakes you use, but as you notice, the larger and better designed rotors will radiate the heat away more effectively.

The properly designed calipers will also reject far more heat keeping the pistons and therefore piston seals cooler. The seals will also be more robust, preventing such a problem.

So yes, this won't be a problem with a proper BBK.
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