I was there last week of november with my wife and did the 2 days as well but still had the 1m's.
I did get a ton of video and pics but i also don't recommend taking a go-pro.
if im not mistaken the tires on the m5 are not mich pss. not sure about m6 they have a contract with contiential per Jim clark and contiental is in the process of buildling them a special tire. the only mich pss were on the instructor's m5.
the sidewalls esp the front didn't look wide/tall enough .
btw what did you get on the m3 auto cross ?
Alpine White E70 11 X5M - K&N Filter , STI Mag , LI , Ultimate DP , Megan Exhaust , AA Tune
Jerez Black E92 10 m3 - STI Mag| LI | RE SSK | AFE Filter | Fabspeed XFC / Xpipe | AA ECU 1.5v | BMW PSW | | Envy Charger | Megan Exhaust | Mich SuperSport
Jetblack E92 08 m3 - V1 | RE SSK | RR Scoops | AFE Filter | AA ECU <Retired>