The guys at the forum 5post (Bimmerpost.com) recently posted new spy images of the upcoming 2012 BMW M5. These images are the most revealing to date showing you the prize under the hood. It is still speculated that the horsepower output from the 4.4-liter Twin Turbo V8 will be around 585 to 600hp.
[source: 5post.com]
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