opinions cant be wrong sooo.....
I lowered mine 1/2 inch, put exhaust on it, pilot super sport tires (highly recommend), a few carbon fiber trim pieces and that's about it. If $SRNE
gets moving a supercharger might be an idea but im afraid to ruin the Naturally aspirated V-8. These cars are awesome, they drive like a super car but the only people who know what they are, are car people. some cars look ok with wide body kits and stuff but to me BMW is the last car that they should be on. I mean, you bought an $80,000 car, spend a few more bucks and mold the kit into the fenders so it doesn't look like an afterthought.