http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/150008-hd-video-bmw-alpina-b5-touring-vs-bmw-m5-touring.html#post1723334 ALPINA B5 Touring vs BMW M5 Touring: ALPINABOARD.com
Modifications on the BMW M5 Touring:http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/131046-roadtrip-report-bmw-m5-touring-2007-stockholm-sweden-supersprint-italy-via-monte-carlo-monaco-dynoverifid-gain-40-hp-full-system-40-min-hd-video.html From this event: http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/137368-supercar-shootout-2009-may-gtboard-com-lp640-lp560-4-m5-touring-m6-porsche-997-gt2-jaguar-xfr-e39-m5-ess-supercharger-more.html http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/149367-video-lamborghini-gallardo-e-gear-500-hp-vs-bmw-m5-touring-supersprint.html#post1715014
http://www.m5board.com/vbulletin/e34-m5-discussion/147918-bmw-m6-vs-1000-hp-bmw-m5-e34-ag.html#post1696533 "1000 HP" BMW M5 E34 vs BMW M6
http://www.m5board.com/vbulletin/e39-m5-e52-z8-discussion/150004-hd-video-bmw-535d-ecu-360-hp-vs-bmw-m5-e39-ecu-supersprint-headers-more.html#post1723324 BMW M5 E39 Headers, cats, exhaust ECU vs BMW 535d ECU (360 HP)
http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/147210-hd-old-classic-race-lamborghini-gallardo-manual-500-hp-vs-bmw-m5-e60.html#post1687500 1080p: Lamborghini Gallardo manual vs BMW M5 stock
http://www.m5board.com/vbulletin/ Ford Mustang Shelby GT500 "600 HP" vs BMW M5
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