BMW Motor World

The 2011 BMW M5 will likely drop its V10 in favor of a torquey 4.4-liter twin-turbo V8 pumping out an expected 540 HP. Rumors aside, these spy photos clearly show a brawnier Bimmer with quad exhaust…

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2011 BMW M5 Spied Testing Twin-Turbos [Spy Photos] (Jalopnik)