Well, I'll update on my Hyperdrive experience. I thought it would be similar to HPDE1, but it was much slower. I only went full tilt through half the corners of NJMP Thunderbolt as I'd catch up to traffic.
My 318 performed flawlessly. I had my Star Specs on which really helped increase the grip level. In the past 5 days, it has done 1500 miles and one 20 minute session on NJMP. I'm definitely doing a full HPDE next time I register for one. __________________ 
2000 M5 -> 1996 318ti -> 1997 328i 
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