Measuring (Wheel) Bolt Circles

4, 6, and 8 lug patterns.

Measure from the center of one stud hole directly across the center of the wheel, to the center of the opposite hole (see diagrams) measurement should equal the bolt circle diameter.

5 lug patterns.

Measure from the center of one stud hole, skipping the adjacent hole, to the outer of the furthest stud hole. That measurement should equal the bolt circle diameter