[ESB]

I’m a bit confused and concerned that this thread has had multiple people reporting similar issues when as far as I knew, the only known S55 flaw was the crank hub.

I mean we’re talking about an engine that is 10+ years old and was in the M3/4 long before our M2Cs. I thought the consensus was that they’re very reliable short of the crank hub (which is not an issue if you remain stock)

Does anyone know if M3/4 owners have been hitting this same issue years ago?

I used to feel silly about the fact I got an extended warranty on the engine but now I guess I feel better about it, lol.

[chris719]

Originally Posted by ESB

I’m a bit confused and concerned that this thread has had multiple people reporting similar issues when as far as I knew, the only known S55 flaw was the crank hub.

I mean we’re talking about an engine that is 10+ years old and was in the M3/4 long before our M2Cs. I thought the consensus was that they’re very reliable short of the crank hub (which is not an issue if you remain stock)

Does anyone know if M3/4 owners have been hitting this same issue years ago?

I used to feel silly about the fact I got an extended warranty on the engine but now I guess I feel better about it, lol.

This has been known since around 2016 and there was a PUMA case in the old system and multiple TSARA cases. The guidance is to only fix it if the customer complains. I'm not sure why it's not more commonly known. It's not a short term reliability issue. I'm sure it will cause Vanos codes eventually but the wear may not result in a problem for a very, very long time.

[RS2OOO]

I can't understand how the cause of this issue is deemed to be incorrect torque from the factory when the issue has been known about for so long (since 2016 according to the post above), yet the problem still persists on engines produced right up to 2020.

Further, the problem is not unique to the S55 as this N55 owner has documented the exact same issue:

[SCM2C]

Originally Posted by joshuawi99

Sorry for the double post but I have a quick question regarding your fault case. Your pictures shown a the beginning of this thread shows the intake cam not the exhaust camshaft? The exhaust carrier looks completly different because its a closed unit, not single caps....

Sir I fear you are too smart for me to talk to lol. I have no idea.

[7tune]

https://youtube.com/shorts/RZIQEkmrI60?feature=share

This thread has got me kind of spooked. I know it's very specific to the S55 but I just watched a vid where the camshaft issue can also affect the N55 on M2's

Can you guys have a listen and let me know what you think? Hopefully I'm just being paranoid...

[Fred Conoway]

Originally Posted by Fred Conoway

I have been following this thread along with the other threads that have been posted about this same issue. Unfortunately, I did start to notice a very faint ticking over the weekend, but wasn't able to verify it until last night when I was messing around in the garage and popped the hood. Mine isn't as loud/pronounced as in the link in the original post, but it is definitely a distinct noise that is different than the injectors, a sound that I am very familiar with after owning a couple turbo BMWs. Will have to get this checked out by the dealer before my warranty is up.

For the questions about when this occurs, I could hear it about minute or two after cold start once the revs drop to 800rpm then 600rpm. It's not very noticeable until that point.

Will provide an update when I get mine diagnosed.

Just to update from my original post, I did finally get this fix done at the dealer under warranty (after waiting for months on the dealer to get the required special tools). Can confirm that the noise is indeed gone after removing and re-torquing the exhaust camshaft

[swampfox94]

my car just got to the dealer for this same issue, gave them tons of details so it can be resolved quickly. Thankfully I think I caught it early and while still under warranty! Will post updates in this thread as I get them

[ROBM2C]

So should we expect this on every m2 comp you think ?

[swampfox94]

Originally Posted by ROBM2C

So should we expect this on every m2 comp you think ?

Honestly unsure but I think this is a wider problem than we think. A lot of people don’t notice it so it goes unreported and unfixed

[ROBM2C]

This thread has me literally popping the hood and listening to my engine every single time I drive it. I truly am disappointed with bmw if this was a known issue and they try to fix as little of them as possible. Every brand has their issues, but this one it seems bmw wants to completely ignore.

[swampfox94]

Originally Posted by ROBM2C

This thread has me literally popping the hood and listening to my engine every single time I drive it. I truly am disappointed with bmw if this was a known issue and they try to fix as little of them as possible. Every brand has their issues, but this one it seems bmw wants to completely ignore.

They already did it once before with the crank hub lol, thankfully this issue won't blow up your engine as far as i know

[chris719]

I suspect every single S55 and maybe even N55 are affected to some degree. It does not seem to cause problems other than maybe accelerated wear, and I haven't seen that much evidence of that either. Maybe if it gets bad. I wonder if this fix is lasting also.

[SCM2C]

Originally Posted by 7tune

https://youtube.com/shorts/RZIQEkmrI60?feature=share

This thread has got me kind of spooked. I know it's very specific to the S55 but I just watched a vid where the camshaft issue can also affect the N55 on M2's

Can you guys have a listen and let me know what you think? Hopefully I'm just being paranoid...

I honestly can’t really tell. I remember being able to hear the tick when I was driving next to barriers and buildings when mine was doing it.

[SCM2C]

Originally Posted by ROBM2C

So should we expect this on every m2 comp you think ?

I doubt it. I’m sure there is some level of quality control in Munich, was probably within tolerance when it left the factory.

[swampfox94]

Anyone have any other TSARA case numbers for this issue? my dealer has not been able to access the one previously listed

[chris719]

Originally Posted by swampfox94

Anyone have any other TSARA case numbers for this issue? my dealer has not been able to access the one previously listed

I only have the numbers previously posted but my dealer ignored me anyway. They ignored me and insisted on replacing the lifters, which happens to require the cam carrier bolts replaced which actually fixes the issue, so they’re convinced it’s the lifters.

[ps2cho]

Originally Posted by swampfox94

Anyone have any other TSARA case numbers for this issue? my dealer has not been able to access the one previously listed

Here was my tsara case # 3279467 from my receipt. Goodluck!