PFC Z-rated pads are PFC's street line. I used to run these on street and switch to PFC-06 for track usage but now I'm just too lazy to swap back and forth, especially considering the car's not even my daily. The pads have at least 80% life left, less dust than OEM and better bite. Have to check but the retaining clips on the backing plate may have snapped but has no effect on function.
Fronts fit M and 3.0si. Rears fit all non-M Z4.
Both cost me $210 shipped, will let go for $100 shipped (for 3.0si owners) or split up fronts $70, rears $40 shipped. Check my iTrader feedback, PM if interested!