what mileage point are you guys doing rod bearings?

[azndrunk74]

I had mine replaced at 105k. My blackstone reports were always clean but in reality all the top bearings were absolutely toast.

[Revvvm3]

Did mine at 85k and tops of them were donezo. Mine are the ones on the left.

[Lexustbs]

On the S85, the bottom bearings are always the culprit, but the S65 it seems split 50/50. Thoughts?

[GabeS]

Originally Posted by pbonsalb

$250 each for rotors, $100 for pads and sensor. $600 total. That leaves $300 for your buddy's 2 hours of labor. I'd work for $150 per hour.

So I was referring to someone saying the brake job costs $1300 in parts alone, lol

[Bruuuce]

I did mine at 60kish.

It was in for other work, so while I was at it had em done.

Only slight wear on one bearing, 08 3rd owner. I've had it since 36k and about 3 years.

[kosz888]

I replaced mine a few week ago. 2008 with 72,000 kms.

[PandaM3]

Just to put some perspective it seams Mercedes openly admits that their super cars. With F1 derived engine needs crankshaft and turbo replacements as part of regular maintenance every 31,000 miles.

http://jalopnik.com/mercedes-will-gi...r-3-1793185285

I know the mercedes supercar is in a completely different league than the S65 motor however there are some similarities
- high rpm redline
- both designed as race engines and put into street cars
- tight clearances

Would be interesting to see what is the exact wear in the the Mercedes motor that causes the crankshaft to be replaced which essentially means a new motor every 31,000 miles as part of its maintenance interval.

[Rajmun340]

Originally Posted by PandaM3

Just to put some perspective it seams Mercedes openly admits that their super cars. With F1 derived engine needs crankshaft and turbo replacements as part of regular maintenance every 31,000 miles.

http://jalopnik.com/mercedes-will-gi...r-3-1793185285

I know the mercedes supercar is in a completely different league than the S65 motor however there are some similarities
- high rpm redline
- both designed as race engines and put into street cars
- tight clearances

Would be interesting to see what is the exact wear in the the Mercedes motor that causes the crankshaft to be replaced which essentially means a new motor every 31,000 miles as part of its maintenance interval.

Not comparable. That F1 engine is turbocharged AND high revving. Back when F1 engines were NA they would easily rev to 18,000 RPM no problem (compared to 11,000 RPM). This TC F1 engine is only 1.6 liters relying on both boost and high rev to produce 1000 HP. That is a double whammy on internals wear. The S65 is NA and very far from 18,000 RPM. It would be ludicrous to draw a parallel.

[PandaM3]

Originally Posted by JoeM3SSII

Not comparable. That F1 engine is turbocharged AND high revving. Back when F1 engines were NA they would easily rev to 18,000 RPM no problem (compared to 11,000 RPM). This TC F1 engine is only 1.6 liters relying on both boost and high rev to produce 1000 HP. That is a double whammy on internals wear. The S65 is NA and very far from 18,000 RPM. So it is ludicrous to try to draw parallels.

Just presenting it as an extreme example of a high revving motor...

Our motors are high revving by passenger car standards but they can still go 100,000+ miles without grenading itself which is far more than the 31,000 miles in that F1 motor for the street

[GVIFlyer]

Originally Posted by PandaM3

Just to put some perspective it seams Mercedes openly admits that their super cars. With F1 derived engine needs crankshaft and turbo replacements as part of regular maintenance every 31,000 miles.

http://jalopnik.com/mercedes-will-gi...r-3-1793185285

I know the mercedes supercar is in a completely different league than the S65 motor however there are some similarities
- high rpm redline
- both designed as race engines and put into street cars
- tight clearances

Would be interesting to see what is the exact wear in the the Mercedes motor that causes the crankshaft to be replaced which essentially means a new motor every 31,000 miles as part of its maintenance interval.

From your article.
"The McLaren spokesperson says the company doesn’t have specific records on engine life of the P1, but that there’s a P1 that belonged to the McLaren press fleet while the car was still being manufactured. The car, McLaren says, has over 50,000 “seriously abusive” miles on it—and the “seriously abusive” part can definitely be expected from a press car—and that it is still “going strong with no major engine work beyond regular services.”

[PandaM3]

Originally Posted by GVFlyer

From your article.
"The McLaren spokesperson says the company doesn’t have specific records on engine life of the P1, but that there’s a P1 that belonged to the McLaren press fleet while the car was still being manufactured. The car, McLaren says, has over 50,000 “seriously abusive” miles on it—and the “seriously abusive” part can definitely be expected from a press car—and that it is still “going strong with no major engine work beyond regular services.”

The mclaren 12c and p1 is the real world example they where using in the article with an engine that is nothing like the Mercedes.

3.8 liter turbo V8 in the mcclaren for the wealthy vs the 1.6liter turbo with electric motors in the Mercedes for the absurdly wealthy.

[GVIFlyer]

Originally Posted by PandaM3

The mclaren 12c and p1 is the real world example they where using in the article with an engine that is nothing like the Mercedes.

3.8 liter turbo V8 in the mcclaren for the wealthy vs the 1.6liter turbo with electric motors in the Mercedes for the absurdly wealthy.

I was merely suggesting that the engine in the McLaren is a lot more like the engine in our M3 than is the engine in the $3,000,000 Mercedes. If one were to try to draw relevant conclusions about maintaining the S65 from the maintenance practices of the McLaren and the Mercedes Supercar, the logical choice would be the McLaren - not the Mercedes as suggested by the OP.

[petem]

07/2008 production
93,xxx miles

In their opinion the shells didn't look that bad, maybe I'm not driving hard enough!!

[LuckiSevens]

Originally Posted by ajee622

i've seen some posts around 60K miles. this seem to be the census?

Every youtube M3 rod bearing replacement video shows normal wear bearings being replaced by non-experts installing after market parts. Or we have Joe Schmo from NJ recommending 5w40 oil based on his interpretation of the BMW ad where they're driving in the snow "where it's real cold" "so you need thinner oil" then later on in another video he gets told to use 10w60 by a euro car mechanic 🤣 it's a side street garage scam, with too many clueless muppets chiming in. Stop modding the engine, leave the car alone.

[LuckiSevens]

Originally Posted by kosz888

I replaced mine a few week ago. 2008 with 72,000 kms.

Normal wear bearings again - totally unnecessary work.

[LuckiSevens]

Originally Posted by Revvvm3

Did mine at 85k and tops of them were donezo. Mine are the ones on the left.

There's fk all wrong with those barings 🤷*♂️

[AC/DC]

Did mine at 14.75k, but wanted to be proactive for upcoming track duty.

[tdott]

Originally Posted by FitzgJ74

There's fk all wrong with those barings 🤷*♂️

Your opinion is not shared with others more knowledgeable and with more experience than you.

Tell us what qualifies you to make such a claim with no proof or logical explanation against well respected people in the field. Why should we believe you?

[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💪

[LuckiSevens]

Originally Posted by tdott

Your opinion is not shared with others more knowledgeable and with more experience than you.

Tell us what qualifies you to make such a claim with no proof or logical explanation against well respected people in the field. Why should we believe you?

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"

[LuckiSevens]

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💪

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'.

[Helmsman]

Originally Posted by FitzgJ74

...I spoke to BMW who said they haven't seen any fails...

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