Wheel bolt-circle diameter is the diameter of a circle drawn through the centers of the wheel's mounting-bolt holes. Whether shopping for new wheels or scrounging wrecking yards for good used ones ...

This is determined by the distance of a circle drawn through the center of your lug nuts. For example, if your rim has an 8-on-6 1/2 bolt pattern, then 8 is the number of lug holes and 61/2 the ...