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      12-02-2014, 02:27 PM   #14
SapphireSiC
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Drives: 2015 M4
Join Date: Oct 2014
Location: Michigan

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Quote:
Originally Posted by nicknaz View Post
My guess is that the more popular route will be purchasing the caliper and other required retrofit parts and aftermarket iron rotors
If I were going to use the car for the track and thought iron rotors preferable, why not purchase the M with iron rotors in the first place and avoid the retrofit costs?
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