Quote:
Originally Posted by RichardP
I'd question the interpretation of those power figures. It seems to be a very suspicious coincidence that the European S63T generates 552 hp (ECE) 560 PS, 412kW (which is exactly what BMW quote) and the USA S63T generates 560 hp (SAE net), 568 PS, 417.5kW, which I've never seen quoted by BMW.
As far as I can see BMW USA only quote 560 hp in US literature, with no qualification, and no kW equivalent, so it's ambiguous.
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it's simple. European measurement is metric and there are two different metric units (Ps and KW) to measure engine power in System International (SI) plus they mention the SAE because of US marketing.
In US we just measure SAE.... there are hundred units for power measurement for different applications and there is no need to include all of them in spec
