Check your owner’s manual to see if there is a specific procedure for determining your lug pattern.

How to determine lug pattern. The number you see will be the actual measurement of the bolt pattern. So if you see 4 1/2 inches,. Larger vehicles such as cadillac’s may come with a 5x 5″ or the most commmon “chevy” pattern of 5x 4.75″.

Boat trailers, for example, commonly have a 5 lug wheel pattern with the lugs spaced 4.5 inches apart, and are stated as 5 on 4.5 (inches). Bolt patterns for wheels with even bolt holes (4, 6, or 8 holes) to measure between the holes on a wheel with an even number of holes, simply measure from the center. It can appear in either inches or millimeters, so be sure you know which one you’re looking at.

Some of the most popular models are the ram series. For example, if you have a 5 lug. Bolt pattern or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs.

Look at a picture of your wheels. Ram 1500 has 5 lugs with a 5x5.5 pattern also referred to as a 5x139. There are five main components to identify the correct lug nut or wheel lock:

Measure from the middle of one stud to the outside of the second stud (skipping a stud). To determine the bolt pattern on a 5 lug wheel measure from the center of a wheel stud to the outer edge of the stud furthest away from it. Lug holes are usually designed in a circular pattern.

Being that most cars run a 5 stud axle it’s just fitting that the measurement for the 5. However, some other methods that may help you determine your lug pattern include: You can estimate the measurement by using a straight line from the backside of.