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Stock Problems/IssuesDiscussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Cooper (R50), Cabrio (R52), and Cooper S (R53) MINIs.
I wouldn't jump to that conclusion just yet. Other potential noise makers are the serpentine belt tensioner, the nearby idler, the alternator and the a/c compressor. Try spinning all those by hand and see if they turn smoothly, or seem to be 'grainy.'