Spigot rings (centre rings) sometimes reffered to as spacer rings or hub centric rings, are used to ensure that alloy wheels are located properly on the hub of a vehicle. If an aftermarket alloy wheels is not fitted with a spigot ring it will probably cause the wheel to vibrate and increase uneven tyre wear.
Each spigot ring has a specific outer bore designed for a partucular wheel manufacturer and an inner bore to suit a car manufacturers hub spline. Hence there is not a one fit spigot ring and you need to refer to the different specs and find your wheel make and then car fit.
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