Do all E9x M3 have rod bearing problems?

[Scharbag]

Originally Posted by Assimilator1

Big end bearings not a common US term?

No, it seems we typically refer to them as "rod bearings" as the small end is not a bearing.

On a similar note, I personally think that metric tonnes should be simply referred to as megagrams (Mg) and tried to affect this change at my old work-site. I say this because a metric tonne (t, 2204.6lb), a short ton (ton, 2000lb) and and long ton (in or WT, 2240lb) are easily confused.

My efforts were in vain...

But I digress

[SYT_Shadow]

Originally Posted by akkando

This guy is just guessing. He didn't look at anything, he didn't measure anything. Just musing that it could be people tuning their engines, not warming up their car, using the wrong oil, waiting too long between oil changes, etc. Basically he is saying "In my experience, everything is user error, so this must be too"

Exactly

My E92 M3 was bought brand new, it followed the most stringent break in procedure on the planet, had oil changes (with BMW oil) every 5k miles, was never driven in cold temps, was never driven hard until fully warmed up.

Guess what, at 30k the rod bearings looked like crap.


Back in 2010 I was curious about whether it was user error and was determined to find out with my 2013 E92 M3.

[SYT_Shadow]

Originally Posted by wfdeacon88

you probably have the "newer" bearings being a 2011 MY. Still just as likely to fail as the previous bearings.... So it won't change the need to get them changed to BE.

Yup. There have already been a few 'blackstone looks good, blows engine next day' M engines in the past

That's why I don't bother with the analysis anymore... waste of time

[Assimilator1]

I don't suppose you have links of those cases do you? (beyond the ones I have above).

Scharbag
Lol , I always wondered what a short & long ton were , why the hell do they even exist!?
I like your Mg idea! Although some might confuse it for micrograms, or Manganese