Its called the SP Super Sport Race....
I saw this on a BMW Enthusiast Site....... Has anybody tried these tires out?? They dont look all that bad. Here are the sizes they have out.....
The SP Super Sport Race is available eight Z-rated sizes: 225/45ZR17; 245/40ZR17; 225/40ZR18; 235/40ZR18; 245/35ZR18; 255/35ZR18; 265/35ZR18 and 285/30ZR18.
Zach