The bolt pattern is the measurement of an imaginary circle that goes around the bolt holes in your wheel. The first number tells you how many bolt holes the wheel has, and the second number tells you the diameter of the imaginary circle.
Some of you might not understand how to measure a bolt pattern on a wheel. So, we created this guide to explain how to take wheel stud measurements.
Bolt patterns are just measurements of a circle that go across the middle of the lugs. It can be helpful to know this measurement if you want to put new wheels on your car.
You can see a bolt pattern by looking at how many bolts or studs are on a car and the distance between them. The bolt pattern is often given in numbers like 5 x 4-3/4". This means that there are 5 bolts and they are spaced 2-1/2" apart. We have tools to measure bolt pattern and it's really easy to use.
How to Read a Wheel Pattern
Example: 5 x 4-3/4"
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.
The Second Number
The second piece of information is the 4-3/4”. This is the diameter of the circle formed by the lug studs.
How to Measure a 4-Lug, 6-Lug or 8-Lug Wheel Pattern
Measuring a 4-, 6- or 8-lug wheel pattern is easy. You just have to measure from one hole to the other.
How to Measure a 5-Lug Wheel Pattern
Tools are used to measure bolt patterns. If you don't have the tool, you can measure from the center of any hole, and then skip a hole in either direction. Then, measure to the outside edge of that hole.