These gaskets do fail but in experience it's closer to 150k or 6 or 7 years.
I too am an engineer and agree 100%. However, I do have a theory that prolonged oil change durations contribute to this. Did you 100% follow BMW oil changes? That's only about 3 oil changes in 58k miles.
Now with that said ask for goodwill!!!! At 58k and a 2008 you are in the running for it. The dealer controls that process not BMWNA. It sounds like this dealer doesn't want your repeat business and is playing shuck and jive so you don't ask for it!
Last edited by x3brian; 12-02-2012 at 10:34 AM.