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      07-27-2016, 12:04 PM   #1
idratherhaveanM
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Rod bearings - 2011 and newer

In 2011 the S65 got aluminum and tin rod bearings . Prior to that, it was lead and copper. I keep reading about all the rod bearing issues....since I just bought a 2011 E90M, should I be less concerned? 70,000 miles, one meticulous owner.

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      07-27-2016, 12:07 PM   #2
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      07-27-2016, 12:11 PM   #3
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Dude. I hope the sale isn't final....you should probably return it ASAP. Your bearings are toast!
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      07-27-2016, 12:12 PM   #4
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This has been thoroughly discussed. Look for some of the threads. But in general no. The bearings are no better. The clearances are the same. They switched to aluminum to meet EU requirements. That being said, chances are better since they made it 70k that they won't fail. Most failures I've seen and heard about, especially on 2011-2013 have been around 50k or less, much less. Do a search of the forums and read the s65 blown engine/failure thread that's hundreds of pages. Lots of great info in there. Good luck and get ready to get flamed for making this thread lol
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      07-27-2016, 01:11 PM   #5
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isnt every previous owner "meticulous?" either that or an old guy/lady who only drive it on weekends.
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      07-27-2016, 01:55 PM   #6
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Isn't 70k high miles for a 2011? I just hit 70k in my 08.: Either way, if you're plan on keeping your car for a while or SC, I'd invest in a RB swap.
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      07-27-2016, 04:35 PM   #7
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Before you panic or even consider a RB swap...get your oil checked with Blackstone Labs. That way you'll a snapshot and some data regarding your individual car. If there are signs of unusual wear/failure then I would consider replacing the RB should you plan to keep the car.
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      07-27-2016, 04:45 PM   #8
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I haven't actually seen any proof that new rod bearings cured anything!
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      07-27-2016, 04:59 PM   #9
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Quote:
Originally Posted by UPSROD View Post
I haven't actually seen any proof that new rod bearings cured anything!
That's the funny part of all of the RB hysteria. Also, I wouldn't trust just any "indie tech" poking around inside my S65.
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      07-27-2016, 05:04 PM   #10
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Quote:
Originally Posted by idratherhaveanM View Post
In 2011 the S65 got aluminum and tin rod bearings . Prior to that, it was lead and copper. I keep reading about all the rod bearing issues....since I just bought a 2011 E90M, should I be less concerned? 70,000 miles, one meticulous owner.

Thanks!
Good lord, the responses in this thread

The simple answer is, no one knows if you should be less concerned. That's up to you. It sounds like you read the information available here, so you know that people have chosen among a set of options.

Bearing clearance was inadequate in my 2008, my old bearings were showing oil starvation and my car had 71k miles on it.
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      07-27-2016, 05:37 PM   #11
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Quote:
Originally Posted by nyfg56 View Post
This has been thoroughly discussed. Look for some of the threads. But in general no. The bearings are no better. The clearances are the same. They switched to aluminum to meet EU requirements. That being said, chances are better since they made it 70k that they won't fail. Most failures I've seen and heard about, especially on 2011-2013 have been around 50k or less, much less. Do a search of the forums and read the s65 blown engine/failure thread that's hundreds of pages. Lots of great info in there. Good luck and get ready to get flamed for making this thread lol
Just asking, really, because I am on the same boat: Did you read anything else than what I did?

In that thread, the bearing measurements were taken and as I understand it, the new type bearings are:

a. wider, thus allowing more oil to squeeze in
b. harder, thus should have less wear

Also, I heard that one of the reasons for the part change was the start-stop-system, not EU regulation 2011/65/EU on ROHS (although the latter would fit).

Alas, there are less 2011+ cars than pre-2011 that already have the mileage in order to make their owners change the bearings in advance and post some pics of their condition.
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      07-27-2016, 05:51 PM   #12
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      07-27-2016, 06:58 PM   #13
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Quote:
Originally Posted by Bimmer-M3 View Post
I second the motion. This has to be one of the biggest violation of forum rules I have ever seen.
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      07-27-2016, 08:33 PM   #14
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Quote:
Originally Posted by BimmerRookie
Dude. I hope the sale isn't final....you should probably return it ASAP. Your bearings are toast!
Too late. They're going to grenade and the car will spontaneously combust.
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      07-27-2016, 08:35 PM   #15
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Quote:
Originally Posted by Bimmer Barney
Quote:
Originally Posted by Bimmer-M3 View Post
I second the motion. This has to be one of the biggest violation of forum rules I have ever seen.
There's a thread on rod bearings/HAI GUSSS WUT DO I NEED TO C WHEN BUYING M3/WUT SHUD I PAY/insert-dumbass-redundant-thread-here on a daily basis.

I don't know why I check this General section anymore.
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      07-27-2016, 10:35 PM   #16
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I too have a 2011. With only 25k and myself
Being the original owner, I'm not to worried.

If I had 70k, hard to say. Black stone won't tell you much since there is no copper in our bearings.

My advice would be this. If you plan on keeping the car over 2 years and will put over 15k miles on it, or if you're going to SC it, have the bearings done, but of course by someone that you trust.
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      07-28-2016, 04:17 AM   #17
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My ride is currently at the dealership undergoing rod bearing check. Mileage is about 51k miles for a 2011 E92. Probably would know in a couple of days if the revised rod bearings are of any improvement
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      07-28-2016, 06:31 AM   #18
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You can read dozens of threads and hundreds of posts and still be no wiser or end up more confused. The main reason for that is the countless posts that don't contribute anything. I don't understand why people post if they can't contribute. Its really annoying reading through them trying to find something that is useful. Rant/

Edit: It would be great to have an authoritative sticky on rod bearings considering the amount of concern they generate. A sticky on throttle actuators would also be really useful.

Last edited by Ao1; 07-28-2016 at 06:43 AM.
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      07-28-2016, 07:03 AM   #19
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Quote:
Originally Posted by Ao1
You can read dozens of threads and hundreds of posts and still be no wiser or end up more confused. The main reason for that is the countless posts that don't contribute anything. I don't understand why people post if they can't contribute. Its really annoying reading through them trying to find something that is useful. Rant/

Edit: It would be great to have an authoritative sticky on rod bearings considering the amount of concern they generate. A sticky on throttle actuators would also be really useful.
2nd that for an authoritative sticky on ROD BEARINGS.
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      07-28-2016, 09:39 AM   #20
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Quote:
Originally Posted by masschaoz View Post
My ride is currently at the dealership undergoing rod bearing check. Mileage is about 51k miles for a 2011 E92. Probably would know in a couple of days if the revised rod bearings are of any improvement
revised bearings, huh?
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      07-28-2016, 09:46 AM   #21
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Quote:
Originally Posted by masschaoz View Post
My ride is currently at the dealership undergoing rod bearing check. Mileage is about 51k miles for a 2011 E92. Probably would know in a couple of days if the revised rod bearings are of any improvement
How are they checking the bearings?

Last edited by Doc Oc; 07-28-2016 at 10:06 AM.
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      07-28-2016, 10:19 AM   #22
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Quote:
Originally Posted by Ao1 View Post
You can read dozens of threads and hundreds of posts and still be no wiser or end up more confused. The main reason for that is the countless posts that don't contribute anything. I don't understand why people post if they can't contribute. Its really annoying reading through them trying to find something that is useful. Rant/

Edit: It would be great to have an authoritative sticky on rod bearings considering the amount of concern they generate. A sticky on throttle actuators would also be really useful.
Quote:
Originally Posted by E30M3Brill View Post
2nd that for an authoritative sticky on ROD BEARINGS.
There is such a thread. It just isn't a sticky.
http://www.m3post.com/forums/showthread.php?t=892838
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