# How do you measure a lug pattern?? **URL:** \ **Category:** Shift518 Automotive\ **Created:** [January 31, 2011, 11:41am UTC](https://forums.speedlife.net/t/how-do-you-measure-a-lug-pattern/256707 "2011-01-31T11:41:14Z")\ **Posts on this page:** 1\ **Showing post:** 19
**Author:** ![Johawk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/johawk/32/6284_2.png) [@Johawk](https://forums.speedlife.net/u/Johawk)\ **Post date:** [February 1, 2011, 4:34am UTC](https://forums.speedlife.net/t/how-do-you-measure-a-lug-pattern/256707/19 "2011-02-01T04:34:10Z")
> [@F/S 17" winter tires 215/45R17](https://forums.speedlife.net/t/f-s-17-winter-tires-215-45r17/39306/2): > > Measure from the center of the first lug to the center of the third lug in the pattern. The bolt pattern or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs. Bolt patterns can be 4, 5, 6, 7, or 8 lug holes, however tuner applications are typically 4 or 5 lug. Bolt circles are measured in both inches and millimeters, therefore you may hear a bolt pattern referred to as both (i.e. 5x114.3 mm is also referred to as 5x4.5). A bolt circle of 5x114.3 mm would indicate a 5 lug pattern on a circle with a diameter of 114.3mm (or 4.5"). Measure from the outer edge of one bolt hole and the center of the other. On odd number bolt circles the full diameter cant be measure by not measuring across the centerline of the circle. This will help correct the measurement --- _[View the full topic](https://forums.speedlife.net/t/how-do-you-measure-a-lug-pattern/256707)._