How to Measure Wheel Back Spacing This measurement is important to be sure you have proper wheel clearance.Wheel Lug Nut / Bolt Torque Sequence Correct Wheel Lug Nut / Bolt Torque Sequence - 4 lug, 5 lug, 6 lug.

How to Measure Bolt Pattern Bolt pattern - diameter of an imaginary circle formed by the centers of the wheel lugs.Use of this site constitutes your agreement to these terms. No warranties or guarantees are expressed or implied as to the accuracy of the information provided on this site. This information is accurate to the best of our knowledge. If there is an ODD number of lugs: Measure from the CENTER of one lug to the OUTER EDGE of the hole diagonally across from it. If there is an EVEN number of lugs: Measure center-to-center on lugs directly across from each other. The measured diameter of an imaginary circle formed by the centers of the wheel lugs or bolt holes. Measure from the inside of the outer lip at the bead seating point to the inner lip.įrom the inside of the wheel at the point where it contacts the hub, brake drum or axle flange to the inside edge (lip) of the wheel. The actual diameter of the wheel at the point where the tire bead seats ( NOT the outer lip of the rim). There are four important measurements that are used to categorize and identify a wheel for fitment purposes. A bolt circle of 5 x 4.5 would indicate a 5 lug bolt pattern on a circle with a diameter of 4.5 inches. Bolt patterns can be 3, 4, 5, 6, 7, 8 or 10 lug holes. Key Identifying Wheel Dimensions: Wheel Bolt or Lug Pattern (or bolt circle, lug circle, lug pattern, etc.) is the measured diameter of an imaginary circle formed by the centers of the wheel lugs or bolt holes. Resurrecting the WORST Squarebody CHEVY Stepside EVER! Builds and ExamplesĪdditional Wheel / Measurement Information.

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