![](https://i.kinja-img.com/image/upload/c_fit,q_60,w_645/09384584a0288a226248b36f62588272.jpg)
I had the same experience with my Z4. I found some backing plates for the 3 series that work fit on the Z4 with the exception of one bolt hole that needed to be drilled, I also put on new hubs and bearings while I was at it. It was a fun weekend project. The next track day I went to was a 20min session of bracket…