Quote:
Originally Posted by RichardP
Well, given the information I've had out of BMW, that they have all but sworn is correct, I'd be willing to bet that the engines output is identical (to within measurable limits and manufacturing tolerance etc.). At some point the 560 PS value has been interpreted as 560 hp SAE.
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Richard, I think they tune the engine for different models. As an example look at the spec for X6M! it has the same S63TU engine with a little less HP (555 based on BMWUSA)