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      04-05-2013, 01:19 PM   #38
CSBM5
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Drives: 2011 M3, 2001 M5, etc
Join Date: Nov 2005
Location: Raleigh, NC

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What happened to the main bearing "issues" with the S65? Has BMWNA not replaced more engines due to mains having problems than rod bearings? Some speculation has pointed to bedplate deflection at high rpms. I do recall BMW making a running change in main bearings in something like Nov 2008 production I think, but it seems there were (are?) plenty of examples of issues past that date of production too. Was all that just hype, and the mains are fine? Is it just a production tolerance issue, and there is no operational issue with the mains?
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