Spacer Dimensions.
 

can someone give me the demensions on a 25mm hubcentric spacer? really looking for the inside and outside dim of the ring and the outside dimension but would like all of them. looking got accurate dim not round about. Making my own. Thanks fellas :tiphat:

All of that information is relevant to what spacer you are using.

Your OEM wheel is hub centric, as well as all other wheels specifically for the Nissan 370Z.

Not all spacers are hub centric, and in the case that they aren't you'll have to measure it accordingly. If you have the proper wheel spacer, you shouldn't need a hub centric ring.

Find out what size you need and look at it on here...
Wheel Hub Centric Rings - buy wheel hub rings online from 1010tires.com

i think most rings for nissans are 66.1mm inner and 73 outer... but that 73 is just a standard dimension most wheels have.

Ok so ur saying that i wouldnt have to make that ring in the spacer if i did it correctly? I havnt pulled the wheel off yet, to cold out lol, maybe ill pull my snowmobile out and bring in the the garage and take a look. i hate not knowing stuff about my car.

Thanks