[Demaine]

Recently purchased bmw f30 n55 2012 early model...read that there was rod bearing issues. Any solid evidence of causes and preventions??

[DreamerJoe]

rod bearing issue was on the e9x M3, N55 may have issues with the crank hub in high HP applications, but they do sell keyed aftermarket ones.

[Demaine]

So basically I have nothing to worry about? I’m new to the bmw world so excuse ,y rookie questions

[F32Fleet]

Originally Posted by Demaine

So basically I have nothing to worry about? I'm new to the bmw world so excuse ,y rookie questions

Nothing to worry about unless the vehicle was tuned to hell and abused by the prior owner.

The N55 had been used in a wide range of models for almost a decade.

[Demaine]

Great and thanks for the response, only reason I asked was be cuz I saw a few posts about person spun bearing after tune so thanks for clearing that up

[brigade24]

Originally Posted by Demaine

So basically I have nothing to worry about? I’m new to the bmw world so excuse ,y rookie questions

its def one of the more reliable powerplants they have made...but it is still a bmw. Stay on top of your oil changes and you should be fine.