Originally Posted by Levi
I'm not sure there is a need for both the 3.0l V6 if the S65 is used. Also we do not know what BMW's supercar will be like. According to the lastest rumors by SCOTT, BMW doens't want an R8 rival, but rather a McLaren P1, Ferrari F70 rival, what would make it the same car as the Lexus LFA, but with worse sound, or like the 918 Spyder, which in BMW version is the i8. We don't know what is BMW's M range strategy, if if there are to be two or only one model, mid-front or mid-rear engine. For a mid-rear configuration an I6 would not make alot of sense, so a V6 would be better. But I doubt there will be two engines options for a stand alone M car.
If I take an look at zhe spezifications of the S65 and the S63Tü than we could also speculate if BMW would also go the MB way and use the B38 and N20 engine blocks to create an complete new 4.0ltr.V8 BiTurbo and an 3.0ltr.V6 BiTurbo ... so they could use in the future many common parts through the complete engine range.