Thanks for pic links.
Yes - those are the EXACT tiny ridges I saw on my brand new Powerstop rotors, but did not see on old Powerstop rotors (they looked as if they had been ground away through use).
I just did my first brake job ever on my MINI, so I’ll follow suggestions above and check out parking brake “tension” and dust cover.
Thanks!
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Rear brake rotor install problem
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