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Registered
Join Date: May 2010
Posts: 5
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E39 528i Zimmerman Rotor Prep?
The Zimmerman OEM rotors I bought from Pelican had a leaflet in the box that said NOT to clean the rotor surface prior to installing. I thought ALL rotors needed to be prepped to remove the coating from the factory. What's the prep process for these Zimmerman rotors prior to mounting?
Thanks, m3doc24 |
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07-30-2011, 02:38 PM
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Registered
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 14,168
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I would wipe off the film with laquer thinner or brake cleaner on the swept area only.
You should break in new rotors with old pads and new pads with old rotors. |
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07-31-2011, 08:37 AM
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Registered
Join Date: Sep 2005
Location: Sacramento CA
Posts: 1,147
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Since 2008, Otto Zimmermann GmbH has used a coating that they call "Coat Z – AntiCorrision". There is a reason that they put that note in the box. This coating is intended to be left on. The area that the pads touch will be wiped clean the first time you use the brakes. The rest of the rotor is intended to stay protected by the coating.
If you have greasy fingerprints on the working surface, you should clean the grease off with brake cleaner, but try not to remove the coating from the edges, holes, or grooves. |
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08-01-2011, 05:37 AM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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If you have the Coat-Z Zimmerman rotors, you do not need to clean them. Clean off any grease with cleaner, but try not to remove the coating.
I disagree with Rocket. You need to bed-in the new pads to the new rotors. StopTech : Balanced Brake Upgrades read this. |
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08-01-2011, 12:25 PM
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Registered
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 14,168
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I'll have to look it up, but It's what I've always done.
The StopTech article only refers to new pads with new rotors, but doesn't say it's mandatory (or I missed it  ).
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08-01-2011, 04:23 PM
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