I test-fitted a set of Blitz Technospeed Z1s on the Z and they didn't clear the calipers. The front wheels were 19X8 with either a +44, or +45 offset.
I also had a set of 18X8 Konig Monsoons which wouldn't clear the calipers without a spacer. It also depends on the spoke design, so your wheels might fit. I would check before buying them though.