Have you had any luck with BMW acknowledging the M3's have a bearing and oil starvation issue?
I've heard of a 5 Aussie M3's engines blowing and BMW couldn't care less.
In USA, BMW-NA haven't publicly announced it, but seem to replace/repair everyone's engines regardless of whether they are in warranty or not, on a case by case basis. Then they changed the rules to allow a thinner oil. There's even a video on youtube of a guy racing his M3, blew the bearings and a threw a rod and he got a new engine outside warranty.