30hp + gain for M model?? What is this?
This should be just 135is IMHO.
Just look at E89 z4 35i and 35is spec difference.
I am almost certain this spec is identical to E89 z4 35is engine.
Stupid naming. If this is M, then z4 35is should be called M.
2006 E60 Gone!
2009 E89 Gone!
2014 F25 !!