Vehicle Bolt Pattern – The bolt pattern of a wheel or vehicle is also referred to as the PCD, meaning “Pitch Circle Diameter” or more commonly, the “Bolt Circle”. The two components of a bolt pattern on a vehicle refer to the centerline measurement of the wheel studs on the mounting hub of your vehicle, as well as the number of wheel studs. Your PCD determines the number and position of the bolt holes on a wheel that line up with the studs when being mounted onto the hub. Given the diameter of the vehicle’s bolt pattern, you will be able to determine which wheels will and will not be a match for your vehicle.
Finding Your Measurement – A common bolt pattern ranges anywhere from a 4 to an 8 lug on most vehicles these days. A bolt circle of 6×139.7 would indicate a 6-lug pattern in a circle with a diameter of 139.7mm. There are a few variations of measuring a bolt pattern. A measuring tape is always a handy choice, but we recommend using a Bolt Pattern Measuring Tool to get the most accurate measurement. If your vehicle is equipped with an even number of studs, measure from the center of one wheel stud to the center of the opposing wheel stud. When measuring a 5-lug vehicle, measure from the center of one stud to the outside of the farthest stud to calculate your measurement.