its pricey as hell but i had a great time last time they had in the summer. I might come out with the M6 if i have any mods done.
Rs7 : 10.624 131.50 with a 1.7 60ft Toyo R888
F10 M5: 11.308 131.96 with a 1.9 60ft Street Tires
E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires