Bearings at 56k

kav · 04-09-2022, 08:53 AM

Just had Vanos and bearings done.

Just in case anyone curious.

My bearings at 56,000km.

Tracked a few times but really a garage Queen. Over-serviced to to max. Owned since new. Castol oil change every 1500-2000. Always warmed up before pushed.

Oil analysis every oil change. No warning signs.

Didn't look as bad as I expected.

[IMG][/IMG]

GuidoK · 04-09-2022, 09:15 AM

No copper visible but the wear is definately starting, even on this pampered garage queen with the ultra frequent oil changes.
So that 80,000km or 50k miles as a recommended interval by lots of specialists isn't that crazy.

Imangine that there are also 150k+ miles cars out there without rodbearing refreshes...little ticking timebombs

kav · 04-09-2022, 11:10 AM

Gambling for sure. I knew I was a bit early but didn't want to worry.

Also put the VAC motorsports hub with the vanos rebuild.

JustinHEMI · 04-09-2022, 12:50 PM

Quote:

Originally Posted by GuidoK

No copper visible but the wear is definately starting, even on this pampered garage queen with the ultra frequent oil changes.
So that 80,000km or 50k miles as a recommended interval by lots of specialists isn't that crazy.

Imangine that there are also 150k+ miles cars out there without rodbearing refreshes...little ticking timebombs

Mine is at 125K and I can't find evidence that it's ever been done. Top of the list of things to do ASAP.

r3vmatch · 04-21-2022, 04:29 PM

It seems like these are a 60K mi wear item like a timing belt in some cars. No questions about it.

It's a bit scary to talk with Z4-M owners who are flippant about this issue :/

1messedupZ4M · 04-22-2022, 09:58 AM

Quote:

Originally Posted by r3vmatch

It seems like these are a 60K mi wear item like a timing belt in some cars. No questions about it.

It's a bit scary to talk with Z4-M owners who are flippant about this issue :/

Buddy of mine has 130k on his tracked Z4M on the stock rod bearings.

Scary to say the least.

mchart · 04-22-2022, 02:54 PM

Scary, but at least he's not gambling with the faulty bearings that would slip in the early S54 engines..

Michael9218 · 04-22-2022, 04:21 PM

Over hyped problem in my opinion. Just because a bearing has visible wear doesn't mean it was about to catastrophically fail. How many motors have actually failed or even developed a rod knock?

Also, I fail to see how changing oil at 2,000 miles helps. Waste of oil...

04-09-2022, 08:53 AM	#1
kav Lieutenant 49 Rep 401 Posts Drives: Z4M Join Date: Oct 2007 Location: Canada iTrader: (1)	Just had Vanos and bearings done. Just in case anyone curious. My bearings at 56,000km. Tracked a few times but really a garage Queen. Over-serviced to to max. Owned since new. Castol oil change every 1500-2000. Always warmed up before pushed. Oil analysis every oil change. No warning signs. Didn't look as bad as I expected. [IMG][/IMG] Attached Images
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04-09-2022, 09:15 AM	#2
GuidoK #buildnotbought 10855 Rep 4,893 Posts Drives: Z4 3.0i ESS TS2+ Join Date: Jul 2012 Location: Tinkering in the garage iTrader: (0)	No copper visible but the wear is definately starting, even on this pampered garage queen with the ultra frequent oil changes. So that 80,000km or 50k miles as a recommended interval by lots of specialists isn't that crazy. Imangine that there are also 150k+ miles cars out there without rodbearing refreshes...little ticking timebombs __________________ Z4 3.0i \| ESS TS2+ supercharger \| Quaife ATB LSD \| Brembo/BMW performance BBK front/rear \| Schrick FI cams \| Schmiedmann headers+cats \| Powerflex/strongflex PU bushings \| Vibra-technics engine mounts \| H&R anti rollbars \| KW V3 coilovers/KW camber plates \| Sachs race engineering clutch \| tons of custom sh#t Last edited by GuidoK; 04-09-2022 at 09:21 AM..
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04-09-2022, 11:10 AM	#3
kav Lieutenant 49 Rep 401 Posts Drives: Z4M Join Date: Oct 2007 Location: Canada iTrader: (1)	Gambling for sure. I knew I was a bit early but didn't want to worry. Also put the VAC motorsports hub with the vanos rebuild.
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04-21-2022, 04:29 PM	#5
r3vmatch New Member 2 Rep 20 Posts Drives: 3.0si Roadster Join Date: Apr 2022 Location: San Diego iTrader: (0)	It seems like these are a 60K mi wear item like a timing belt in some cars. No questions about it. It's a bit scary to talk with Z4-M owners who are flippant about this issue :/
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04-22-2022, 02:54 PM	#7
mchart First Lieutenant 433 Rep 352 Posts Drives: 2002 M Coupe Join Date: Jan 2021 Location: NA iTrader: (0)	Scary, but at least he's not gambling with the faulty bearings that would slip in the early S54 engines..
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04-22-2022, 04:21 PM	#8
Michael9218 Lieutenant 595 Rep 484 Posts Drives: 2007 Z4 M Coupe Join Date: Oct 2012 Location: Woodstock, GA iTrader: (0)	Over hyped problem in my opinion. Just because a bearing has visible wear doesn't mean it was about to catastrophically fail. How many motors have actually failed or even developed a rod knock? Also, I fail to see how changing oil at 2,000 miles helps. Waste of oil...
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