Quote:
Originally Posted by mkoesel
The M4’s engine, the S55, has seen its final application in the M2 Competition (except for the upcoming limited CS/CSL model) and will be discontinued after the current generation M4 and M2 exit production.
However, the X3/X4 M’s engine, the S58, will make even more power and would be perfect for a Z4 M. Unfortunately, as far as we know right now, BMW has no plans to offer one. It could change, but it is not necessarily likely.
It is the B58TU. Assuming this is a US spec model, it is a B58B30O1. If it is instead a Euro spec model, it is a B58B30M1.
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if I recall correctly... BMW said they wouldn't make an M model for E85 and they did.... and then they said the same for the E89.. and they actually held true and didn't.. So they have both bases covered. looks like a 50/50 proposition...