How To Measure Bolt Pattern Size. Common bolt patterns have 4, 5, 6, or 8 lug holes, while less common have 3, 7, or 10 lug bolt patterns. As you rub the bolt on the plastic threads, feel for one that fits correctly.
A wheel with 5 lugs won’t have a symmetrical set of bolts. It can appear in either inches or millimeters, so be sure you know which one you’re looking at. A bolt circle of 5×114.3 mm would indicate a 5 lug pattern on a circle with a diameter of 114.3mm (or 4.5).
Thread Pitch Is A Designation Related To The Number Of Threads Per Inch On The Bolt’s Shank.
Now that you know how to measure lug bolt patterns, here is a simple printable wheel bolt pattern measurement tool to keep in your shop. Measure the bolt pattern from the center of the first hole to the center of the second hole. As you rub the bolt on the plastic threads, feel for one that fits correctly.
You Don’t Need To Jack Up The Vehicle Or Trailer Because You’re Not Removing The Tire To Take Your Measurement.
Using these tools, you will be able to find the overall dimensions of the wheels you have! Run the threads of the bolt along the thread gauge of the appropriate type (standard or metric). For example, if you have a 5 lug wheel and your measurement is 5″ then your bolt pattern is 5 x 5″ (5 x 127mm).
Measuring A 6 Bolt Wheel Requires You To Measure Center To Center Of Two Holes Directly Across From Each.
For fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the fastener. Remove the existing wheel (the rear wheel is usually the easiest to measure because the hub normally won’t be in the way). To get a 4, 6 or 8 lug bolt pattern use a device to measure from the center of one lug to the center of the lug directly accross from it.
Look At It Like This, 1 Inch Is Equal To 25.4 Millimeters, And With That Knowledge On Your Hands You Can Easily Calculate Between One Another.
17×9) to make it easy to know the main size. The easiest way to estimate the 5 lug bolt pattern, is to measure from the back of a hole to the center of the second hole. Simply speaking, the holes are not placed directly opposite of one another in this patter, and therefore, you need to know the proper way of measuring this type of rim.
For Fasteners That Are Designed To Be Countersunk, The Measurement Is Made From The Point On The Head.
Orient the bolt so the threads are facing in the same direction as they are on the gauge. This is the way to measure the bolt pattern on your vehicle if it is not a 5 lug (so 4 lug, 6 lug and 8 lug all need to be measured this way): You can estimate the measurement by using a straight line from the backside of one hole to the center of the third bolt hole.