Well, I think the only thing you can do is to check if the Offset is written down on the wheel.
Or:
1890 +24 +32 +37 +44 +45
1810 +39 +44
These are the Offsets for the 5Zigen 5ZR wheels you have, maybe you can figure out. (source: http://www.5zigenusa.com/)
Or:
1890 +24 +32 +37 +44 +45
1810 +39 +44
These are the Offsets for the 5Zigen 5ZR wheels you have, maybe you can figure out. (source: http://www.5zigenusa.com/)