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      03-30-2020, 04:29 PM   #13
jns_e85
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Drives: '05 X3 2.5i, '06 z4M, '17 M2
Join Date: Feb 2014
Location: Chicago Area

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Quote:
Originally Posted by ethan9273 View Post
This is what I saw after opening the caliper

All 4 pistons had some kind of corrosion on them. After cleaning up and installing it was better but not completely gone. Will I have to replace my rotors from damage after just getting them?
Use a brass wire brush to get as much off and reinstall. As long as rotors are still in spec thickness wise and are not deeply grooved, you should be good.

Re-bed your brakes following proper bed in procedures after reinstall and see how they feel. If you have a judder afterwards, may need to warranty the rotors
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2017 M2 - Camber Hubs, MPE, and some other goodies
2006 Z4M - Epic Tune / Eventuri CAI / Euro Headers / Stromung / FA 500 / AS SSK / Arc 8s
2004 Z4 3.0i - Gone, but not forgotten!
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