How long ago did they do the OFHG? Some of the F30/E90 N55 guys have had bearing failure after it was done. You should check the F30/E90 rod bearing threads on their boards, there's more info there. I'm shocked to see two people report failures in one day, especially with 52k on mine. Please let us know what you find out with yours, sorry for the shitty luck.
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