Holy Crap! The main bearing issue seems to be the cause of rod bearing failures

Redd · 05-16-2026, 07:27 PM

Quote:

Originally Posted by powerbait

I just spun #1 main bearing on my e90, it shat all it's parts and pieces through the first three RBs.

So sorry to hear that. Were you supercharged?

powerbait · 05-17-2026, 03:23 PM

It's an 09 e90 DCT @109.9k miles with original OG bearings. I picked it up last year with 97k on it and just use it around town, no track time on this one and the PO kept up fairly well with maintenance and being mostly dealer serviced. It's mostly stock with a few Dinan parts: axle back, intake, pulley, and tune.

L4ces · 06-15-2026, 07:46 PM

212K miles and changed bearing around $147K miles. Still knocking on wood.

05-17-2026, 03:23 PM	#24
powerbait postimus minimus 419 Rep 279 Posts Drives: M3 addiction Join Date: Jan 2014 Location: FL iTrader: (11) Garage List 2006 BMW M3 [10.00] 2011 BMW 1M [10.00] 2009 BMW M3 [10.00] 2010 BMW M3 [8.05] 1998 BMW M3 [9.30]	It's an 09 e90 DCT @109.9k miles with original OG bearings. I picked it up last year with 97k on it and just use it around town, no track time on this one and the PO kept up fairly well with maintenance and being mostly dealer serviced. It's mostly stock with a few Dinan parts: axle back, intake, pulley, and tune.
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06-15-2026, 07:46 PM	#25
L4ces Major 362 Rep 1,492 Posts Drives: 2008 E92 M3 Alpine White Join Date: Aug 2010 Location: NJ - NY iTrader: (0) Garage List 2008 M3 [0.00]	212K miles and changed bearing around $147K miles. Still knocking on wood.
	Appreciate 4 ///M Power-Belgium92182.00 Bmwdoubles_248.00 Assimilator1877.00 JTO246968.00 Quote