You guys take me too literally. What I mean is, BMW initially said the blown S54's were do to driver error, ie overreved. Then the SMG cars started blowing too and they still denied there was a problem.
If we have a list of bearing problems here, then BMW won't be able to say it's not an issue at all. The S54 was so bad, then essentially did a recall.
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."