Jason we can test a set for you guys ... being your dealer we are always glad to help ... I have 4 track days coming up so we can test them out ...
In case 4thM3 wants to test them on his 1M I would be glad to assist with the installation.
Here is the set of Vorshlag CP we installed on the M3 with JRZ suspension ... Definitely a top notch product !
Aleks.