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      04-17-2024, 06:42 PM   #9
M3SQRD
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Drives: E92 M3,G20 330ix,F22 240iX,F82
Join Date: Jun 2009
Location: Mid-Atlantic

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Quote:
Originally Posted by TheMidnightNarwhal View Post
Coated I mean not bare metal, in this case they are zinc coated/plated entirely. They are R1 Concepts E line rotors.

I took the pictures before trying the brake clean but after trying it, they look the exact same.
That’s what I thought you meant but wanted to make sure it was. Have you searched for reviews on the R1 Concept E rotors having a similar surface issue or any issue actually? Biggest concern would be if this staining prevents pad transfer or inconsistent pad transfer. Best case is it wears off easily during the pad bedding-in process.

What pads are you using with these rotors?
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