ok, well PCD is the bolt pattern as you probably know
PCD
Centre bore is where the hub goes. Micra has I think 59.1mm which would me the wheels bore you after to small.
Centre bore
Offset or ET is where the back of the bolts sits. Its kinda difficult to explain.
Zero would be right in the middle. then they are marked as negative or positive. Wheels are usually positive.
Like ET 40 would make it sit 40mm towards the outside which would me the wheel to be more inside the arch
Negative usually creates bigger dish on the wheel and makes the wheels stick out more
