Originally Posted by creepy coupe
Yes sorry didn't ask the question very well.
If the brembo discs are +40mm over the 335i so + 20mm on radius and the Brembo calipers are thicker. I was asking how could they fit within a 335 wheel?
That's the problem
Although the problem is not 335i specific. The factory M3 wheels, which "standard" are also 19" just like my 313 Performance wheels, just happen to offer a bit more clearance inside.
So fitment really depends on the wheels. I could get aftermarket rims to accomodate the 380mm BBK, but:
1) the 313 wheels are just über-secks
2) new wheels = even more ££££
So selling the 380mm kit and sourcing the 355mm kit as a replacement seems like the better solution.