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      07-19-2011, 12:11 AM   #108
Powerslide
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Drives: '15 AY M3 (sold 2008 E93 M3)
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Quote:
Originally Posted by Eccentric View Post
This man is correct. The S63Tu is in fact an underrated engine. Ask your local dealer for more info about it. The 560bhp is actually closer to the WHP figure than the actual BHP
I've also heard from a reliable source as well that BMW itself has dyno'd the F10 M5 at 560 whp...