Editing Wheel sizing (section)

===Centerbore===
The centerbore of a wheel is the hole in the center of the wheel that centers it over the mounting hub of the car. Some factory wheels have a centerbore that matches exactly with the hub to reduce vibration by keeping the wheel centered. Wheels with the correct centerbore for the car they will be mounted on are known as hubcentric. Hubcentric wheels reduce the job of the lug nuts to center the wheel on the hub. Wheels that are not hubcentric are known as lugcentric, as the job of centering is done by the lug nuts assuming they are properly torqued down. Another, more common, term is hub piloted or stud piloted wheels and hubs. The stud piloted (lug centeric) is an older design while the hub piloted design is more commonly in use today and can provide for a more accurate connection.

Centerbore on aftermarket wheels must be equal to or greater than that of the hub, otherwise the wheel cannot be mounted on the car. Many aftermarket wheels come with "hubcentric rings" that lock or slide into the back of the wheel to adapt a wheel with a larger centerbore to a smaller hub.<ref>{{Cite web|title=Town Fair Tire - What is Wheel Centerbore?|url=https://townfairtire.com/information/wheel-rim-information-guide/what-is-wheel-centerbore/index.shtml#:~:text=The%20centerbore%20of%20a%20wheel,reduce%20the%20chance%20of%20vibration.|access-date=2021-04-27|website=townfairtire.com}}</ref><ref>{{cite web|title=Hubcentric-rings.com|work=Why hub centric rings?|url=http://www.hubcentric-rings.com/miksi_soviterengas/|access-date=21 Mar 2011}}</ref><ref>{{Cite web|title=PCD, Bolt Pattern, Center Bore, Wheel Offsets Dubai, Abu Dhabi, UAE, Saudi|url=https://wheelnation.net/wheel-info.html/|access-date=2021-04-27|website=WheelNation|language=en}}</ref>  These adapters are usually made of plastic but also in aluminum.  Plastic rings only provide initial centering, but are not strong enough to help support the wheel in case of high-speed pot hole hit.  Steel ring is strongest, and aluminum is medium