m6board.com: BMW M6 at WOT on airfield from 2005
http://www.m5board.com/vbulletin/showthread.php?t=64628&highlight=BMW+M6+WOT%3A+overtakings!
m6board.com: BMW M6 at WOT on airfield from 2005. Doing "fly-bys". It is evident that the BMW M6 does sound more than the BMW M5 E60.
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