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      08-31-2012, 05:50 AM   #42
AusF20/F48
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Drives: F20 125i MS, F48 XD25i
Join Date: May 2012
Location: Brisbane

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My dealer's technician says that the M Sport (vented / non drilled) are different to M performance rotors.

They are the same diameter, but the MP are made of a different alloy (vented, drilled , slotted) and the calipers have different pistons and seals.

I gather they are more designed for track days for boy racers.

That explains the difference in price.

I am sure that you will be able to get after market (vented, drilled , slotted) rotors for the M Brakes if you want that Performance look.
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