what mileage point are you guys doing rod bearings?

[Scharbag]

Originally Posted by FitzgJ74

What your looking at in the pictures, every time someone posts a pic of 'wear', are bearings that have been honed or shaped perfectly by the engine itself. The failure point would be the tags in the joins, they look totally fine. I'm not doing mine at all, I spoke to BMW who said they haven't seen any fails, but that there's a lot of people out there "getting aftermarket barings fitted"

Argh.

Hydrodynamic bearings do not "hone" as they are designed to eliminate all metal to metal contact.

Please do a little bit of research on hydrodynamic bearings before perpetuating inaccurate information.

Regards,

[///M Power-Belgium]

Originally Posted by FitzgJ74

What your looking at in the pictures, every time someone posts a pic of 'wear', are bearings that have been honed or shaped perfectly by the engine itself. The failure point would be the tags in the joins, they look totally fine. I'm not doing mine at all, I spoke to BMW who said they haven't seen any fails, but that there's a lot of people out there "getting aftermarket barings fitted"

=> https://www.m3post.com/forums/showthread.php?t=786615

[Solo_M_Tech]

Originally Posted by FitzgJ74

What your looking at in the pictures, every time someone posts a pic of 'wear', are bearings that have been honed or shaped perfectly by the engine itself. The failure point would be the tags in the joins, they look totally fine. I'm not doing mine at all, I spoke to BMW who said they haven't seen any fails, but that there's a lot of people out there "getting aftermarket barings fitted"

whatever you're smoking needs to be shared. Nothing you stated is factual. Wait till you wear through that copper layer ( or babbitt layer) and you're steel on steel...

[elvism]

A few weeks ago I emailed 5 different BMW shop foreman and all 5 have never seen a rod bearing issue. They did though see throttle actuator failure. I know this topic has been beaten to death.. Has there been a poll conducted on this site to see how many had actual rod bearing failure vs no failure? I'm talking about specific replacement that we're done due to actual failures and not preventative maintenance.

[TrAcK TRaP]

Save the $2500 for hookers..

[pbonsalb]

Originally Posted by elvism

A few weeks ago I emailed 5 different BMW shop foreman and all 5 have never seen a rod bearing issue. They did though see throttle actuator failure. I know this topic has been beaten to death.. Has there been a poll conducted on this site to see how many had actual rod bearing failure vs no failure? I'm talking about specific replacement that we're done due to actual failures and not preventative maintenance.

BMW will admit to actuator failures. It might instruct it’s dealers not to discuss rod bearing failures since there is a court case involving those and whether there is a defect that BMW should responsible for. I am not sure you got an honest answer.

[6ixSpd]

Originally Posted by FitzgJ74

Exactly. There's cars out there with 140k on them with no bearing issue, that tells me this isn't a design flaw. Ppl are being scammed by YouTube videos. The only time you see uneven/excessive wear on the front baring for example is when someone has been 'modding' again, supercharging 'mods'.

You have absolutely no clue what the hell you are talking about, so you should kindly shut up.

[tdott]

Originally Posted by InnerBlueSkies

Mechanic in my area (Bryan College Station TX) laughed and refused to do the service even after reviewing thread. I have 63000 miles on my 08 and post update when I encounter a failure. Wish me luck💪

I would get a new mechanic. Anyone would looks at a rod bearing with the first layer worn through and says that is normal needs to go back to school.

Originally Posted by FitzgJ74

What your looking at in the pictures, every time someone posts a pic of 'wear', are bearings that have been honed or shaped perfectly by the engine itself. The failure point would be the tags in the joins, they look totally fine. I'm not doing mine at all, I spoke to BMW who said they haven't seen any fails, but that there's a lot of people out there "getting aftermarket barings fitted"

As mention before, that is not in any way factual, stop spreading misinformation.

Originally Posted by Helmsman

Now THAT is fake news and either ignorance or pure lying from the BMW bloke.

The ignorance in this tread is appalling, we should just let the fools argue with themselves.

Originally Posted by Scharbag

Argh.

Hydrodynamic bearings do not "hone" as they are designed to eliminate all metal to metal contact.

Please do a little bit of research on hydrodynamic bearings before perpetuating inaccurate information.

Regards,

They don't deserve your words of wisdom. They probably can't even comprehend it.

Originally Posted by elvism

A few weeks ago I emailed 5 different BMW shop foreman and all 5 have never seen a rod bearing issue. They did though see throttle actuator failure. I know this topic has been beaten to death.. Has there been a poll conducted on this site to see how many had actual rod bearing failure vs no failure? I'm talking about specific replacement that we're done due to actual failures and not preventative maintenance.

Oh wow, check this dude out with his emails.

[ciges]

Ceramic coated my rod bearings with Liqui Moly CeraTec at 80k for $20,they should be good for another 80k miles,saved $2,480.

[Scharbag]

Originally Posted by elvism

A few weeks ago I emailed 5 different BMW shop foreman and all 5 have never seen a rod bearing issue. They did though see throttle actuator failure. I know this topic has been beaten to death.. Has there been a poll conducted on this site to see how many had actual rod bearing failure vs no failure? I'm talking about specific replacement that we're done due to actual failures and not preventative maintenance.

Waiting for the bearings to fail is a minimum $10K touch. Changing bearings is far less.

BMW screwed up the design. If you understand tolerances and statistics, you would realize that there exists a risk to get a very tight engine that WILL fail prematurely.

Go do some reading. Come back with facts.

Stop propagating bullsh!it.

Happy new year.

[NoHedge]

Originally Posted by ciges

Ceramic coated my rod bearings with Liqui Moly CeraTec at 80k for $20,they should be good for another 80k miles,saved $2,480.

Interesting...

Are you talking about this stuff - https://www.amazon.com/Liqui-Moly-20.../dp/B001CZODH8

Any literature on effectiveness? Looking into this

Edit: apparently its chemical properties thin the oil too. would this be a double benefit for those of us running 10w60?

[ciges]

Originally Posted by NoHedge

Interesting...

Are you talking about this stuff - https://www.amazon.com/Liqui-Moly-20.../dp/B001CZODH8

Any literature on effectiveness? Looking into this

That's it,German stuff,there are couple videos on youtube with people testing Liqui Moly CeraTec .One bottle per 6 liters of oil.

[///M Power-Belgium]

Originally Posted by TrAcK TRaP

Save the $2500 for hookers..

.

[elvism]

Originally Posted by tdott

I would get a new mechanic. Anyone would looks at a rod bearing with the first layer worn through and says that is normal needs to go back to school.

As mention before, that is not in any way factual, stop spreading misinformation.

The ignorance in this tread is appalling, we should just let the fools argue with themselves.

They don't deserve your words of wisdom. They probably can't even comprehend it.

Oh wow, check this dude out with his emails.

I guess all 5 shop foreman conspired to lie to me.

[tdott]

Originally Posted by elvism

I guess all 5 shop foreman conspired to lie to me.

That's like asking Trump about his taxes.

[Dr. Dre]

Originally Posted by elvism

A few weeks ago I emailed 5 different BMW shop foreman and all 5 have never seen a rod bearing issue. They did though see throttle actuator failure. I know this topic has been beaten to death.. Has there been a poll conducted on this site to see how many had actual rod bearing failure vs no failure? I'm talking about specific replacement that we're done due to actual failures and not preventative maintenance.

Dude, are you kidding me. I'm a 20 year District Manager in the automotive industry. You would have to be a jackass service manager to admit to a major issue to some random person who contacts.

Second, any service manager worth his or her salt would never respond to some random person in writing about an issue like this. They would probably get fired if that response ever ended up being used in court against the BMW NA.

If you want to see results of rod bearing failure go to the NHTSA website. However, you'll only see results if someone reports an issue. The issue has to be safety related. Obviously, driving down the highway and having a rod bearing failure is a safety issue due to loss of power or fire due to oil getting on exhaust components.

Based on the "Tread Act" any issue that could cause harm has to be reported. However, at the factory level you try to minimize any written communications regarding an issue due to the fact that it's discoverable. The other thing you try to do is not to cover the repair under warranty because then you're basically admitting that there is an issue.

[elvism]

Originally Posted by Dr. Dre

Dude, are you kidding me. I'm a 20 year District Manager in the automotive industry. You would have to be a jackass service manager to admit to a major issue to some random person who contacts.

Second, any service manager worth his or her salt would never respond to some random person in writing about an issue like this. They would probably get fired if that response ever ended up being used in court against the BMW NA.

If you want to see results of rod bearing failure go to the NHTSA website. However, you'll only see results if someone reports an issue. The issue has to be safety related. Obviously, driving down the highway and having a rod bearing failure is a safety issue due to loss of power or fire due to oil getting on exhaust components.

Based on the "Tread Act" any issue that could cause harm has to be reported. However, at the factory level you try to minimize any written communications regarding an issue due to the fact that it's discoverable. The other thing you try to do is not to cover the repair under warranty because then you're basically admitting that there is an issue.

I'm just telling everyone what I was told by the shop foremen. I asked if they had any cars come with rod bearing issues and their answers were no. That's all I'm saying.

[shimmy23]

Originally Posted by elvism

I guess all 5 shop foreman conspired to lie to me.

when will people learn? when has any dealership admitted that an engine can fail prematurely? a local dealer recently experienced its first failure from RBs... do you think they will now tell people?

the way this thread is headed, it'll be locked soon.

[Dr. Dre]

I've posted this before and got flamed. In an odd way by individuals replacing the rod bearings it let's BMW off the hook. If cars were out there failing on the highway or catching on fire NHTSA would force BMW to respond. And no it doesn't matter if the cars are out of warranty.

[Dr. Dre]

Originally Posted by elvism

I'm just telling everyone what I was told by the shop foremen. I asked if they had any cars come with rod bearing issues and their answers were no. That's all I'm say.

Interesting that you were able to get the email address for 5 different shop foreman. You called up the dealership as a random person and was able to get emails. Ok.

Any good shop I've ever dealt with the shop foreman never spoke to customers. Their job is shop productivity (making sure the right technician got the appropriate job for their skill level) not spending time responding to emails for random people.

[Todd0131]

I replace my bearings every fourth oil change. Only way to make sure. May be able to stretch it to five this year.

[Dr. Dre]

Originally Posted by Todd0131

I replace my bearings every fourth oil change. Only way to make sure. May be able to stretch it to five this year.

What do they look like after