So if you see 4 1/2 inches,.

How to measure 4 lug bolt pattern. You’ll need to take 3 measurements of your lug pattern in order to determine the pitch circle diameter and center measurement: How to measure a 5 lug trailer wheel bolt pattern option 2: Measure the distance between two adjacent lug holes,.

For wheels with 4, 6 or 8 lugs you simply measure across a pair of opposite lugs and measure from center to center. Something like 5 on 4.5 — meaning 5 bolts on a 4.5″ diameter circle. The number you see will be the actual measurement of the bolt pattern.

Extend the ruler directly across the center of the wheel to the adjacent lug or. Measure from the middle of one stud to the outside of the second stud (skipping a stud). Pretty simple to do with this handy diagram.

It can appear in either inches or millimeters, so be sure you know which one you’re looking at. Large ez read pictures on how to accurately measure 4, 6, and 8 lug bolt patterns on your wheels. The first number the first is 5 in this example.

This tells you exactly how many studs are on the rotor or how many holes are in the wheels. Measure from the outside of 1 stud to the center of the one across, make sure you skip a stud as shown in. Basically your ruler goes across the center of the wheel.

To measure 4 lug pattern wheels, hold the end of the ruler or tape measure at the center of one lug. Click the picture to see the full size. Some of the more common sizes for bolt.