What is center bore?
The center bore or hub diameter of a rim speaks for itself, it's the size of the center hole in the middle of the rim. This value is expressed in millimeters.
![Naafgat diameter](<? echo $absoluteurl; ?>/images/naafgat.jpg)
![](https://www.wheel-fitment.com/images/hub_centric_rings.jpg)
The center bore or hub diameter of a rim speaks for itself, it's the size of the center hole in the middle of the rim. This value is expressed in millimeters.