Does anyone know the size of the wheel hub bore on a Z8?
I tried installing a RaceTech/Brembo 380mm kit on a 4.4i X5 today and the rotor hat bore was much bigger than the X5 hub bore. The X5 hub was 75.6mm and the rotor hat bore was 78.5mm.
The rotor hat has a part number stamped on it that includes the string "Z8" in the middle, which makes me suspect that RaceTech may have shipped the hats for their Z8 kit instead of the X5 kit.
However, another web page for an aftermarket wheel company claimed the Z8 hub bore was 74.08mm, which is SMALLER than the X5 hub bore.
Does anyone know the REAL size of a Z8 hub bore?
Here's what the brakes would have looked like had the installation gone well:
BMW 4.4i X5 with Brembo 380mm big brake upgrade