[Erhan]

I kinda agree with @wallstreet... We know BMW is pushing for lowering costs, and I'd assume chopping the V8 to V6 is very tempting (for them). S65 is made to be high revving engine, so I don't think it will be all that great for turbo application. Also, M5 has TT V8, M3 cannot have V8. Either I6, or V6. If they choose to go I6, then I'd assume they'll use their standard 3 liter I6, and go from there.

Same for weight. F3x will no be light. It will be lighter than competition. Just like E9x.