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If it were my car I'd try chasing the threads with a good bottoming tap, but if that didn't work I'd install Timeserts - I would not use helicoils on this application.
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2020 X3 M40 Alpine White over Cognac • 20" BBS CC-R • Cerium delete
2017 440xi Estoril over Saddle Brown • 6-speed • Every stinkin' option 
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