The diagram (upper, left) indicates the proper measuring methods. This is where the rim sizing starts to get a little tricky. That should get you your bolt pattern measurement. It is critical to know the BCD of your crankset when you are selecting a new chainring for your bike. Common bolt patterns have 4, 5, 6, or 8 lug holes, while less common have 3, 7, or 10 lug bolt patterns. Basically, the bolt pattern of a wheel is the diameter of the circle that the bolt holes are drilled on. To measure 5 lug pattern wheels, hold the end of the ruler or tape measure to the center of one bolt. 3 Bolt Hole with a 10" Center Hole. 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. Bolt measurements can be calculated in millimeters or inches, but bolt measurements specified in inches are international. Bolt patterns in 4- 6- and 8-lug can be measured by going from the center of a stud to the center of the stud directly across from it. This means that should you ask for a 1/2-inch x 12 x 4-inch Grade 2 Hex Bolt Head with a 1-inch thread, the request is universally understood by bolt manufacturers. Measure Bolt Hole Center to Bolt Hole Center. 4 X 156 Bolt Pattern Measurement and Specifications. Bolt Circle Diameter . The first thing you want to compare is how many lug nuts or studs are on your vehicle and then how many are on the rim. The 4 X 156 Bolt Pattern or Pitch Circle Diameter (PCD) is made up of the stud count (4) and the bolt circle measurement (156), the notional circle determined by the center position of the studs.. How To Measure 4 Lug Bolt Patterns. Thousands of how to measure bolt pattern reviews, same day shipping. Using the illustration below as guide, measuring backspacing is a simple two-step process. Determining the bolt pattern is rather easy, but it is very important that accurate measurements are taken. Some wheels have more than one bolt pattern on the same wheel to accomodate multiple fitments. A "bolt pattern" is essentially the diameter of the "bolt circle". Best how to measure bolt pattern selection available. You can also determine your 5 bolt pattern by measuring the distance between the center of one bolt hole, to the center of the bolt hole next to it. In order to find the right wheel for your trailer, you will need to know the bolt pattern. Now, measure the center of the two bolt holes you selected. Measuring the wheel bolt pattern on your vehicle is necessary if you are in the market for aftermarket wheels. Extend the ruler directly across from the bolt to the space across from the bolt, located in the center of two bolts or lugs, to determine the measurement. So if you see 4 1/2 inches, you have a 5 on 4 1/2 ( also 5×4.5 and 5×114.3) bolt pattern. 6 Bolt with a 10" Center Hole. The diagrams below indicate the proper measuring methods. Stay Connected. Trailer wheel hub patterns can be defined by the number of bolts or lugs per wheel and the diameter of the circle that the bolts are arranged on. As all 6 bolt holes are evenly spaced out in a circular pattern, simply select two opposite bolt holes. To get 5 and 7 lug bolt patterns it's not so simple. Now that you know how to measure lug bolt patterns, here … Online Catalog. If there are 5 studs, multiply the measurement by 1.05 to get the bolt pattern diameter. The diagram indicates the proper measuring methods. The bolt circle is the circle determined by the positions of the bolts; the center of every bolt lies on the circumference of the bolt circle. Four (4) Bolt. When searching for aftermarket wheels, you'll find that the wheel bolt patterns are listed, for you to determine which wheels will fit your vehicle. Click for larger. A 4 bolt wheel with 100mm between opposite bolt holes would be written as 4/100. The bolt pattern spacing can also be measured with a regular tape measure. Once you’ve selected them you should see that there is a 2 bolt hole gap on both sides. Bolt pattern measurements are typically taken in millimeters. Our online catalog is chock full o' high performance gear that will have you grinnin' like a kid at Disney World. First, measure the center to center distance between two studs that are across the hub from each other. Therefore, take a few minutes to measure the wheel bolt pattern so that you purchase the correct wheels for your car. This is how to measure your tire bolt pattern based on your specific lug count. lug pattern / bolt circle / pcd is defined by the number of… See Also: Wheel Bolt Pattern Cross Reference ~ Look-up a vehicle bolt pattern by Make/Model or browse all vehicles with a particular bolt pattern. You measure from the BACK of one lug (skip to next lug as shown) and to the CENTER of that lug. In your situation it will probably end up as 10 7/16" or so which is the 10.5" pattern You need this number in millimeters (mm). The accurate measurement is depicted here and can only be measured with a special tool called a bolt pattern gauge or by using a complex geometric equation. It’s the measurement (diameter) of an imaginary circle passing through the centers of all the bolts in a round pattern – like chainring bolts that hold the rings to the crank. On the new set of wheels you found online, they are listed as 5×100. Lowest price guaranteed. Learn how to determine the bolt pattern on your trailer. Wheel Bolt Pattern is the measured diameter of an imaginary circle formed by the centers of the wheel studs or bolt holes. Below we illustrate how to measure … Bolt pattern or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs. Interchangeable Wheel / Bolt Pattern Chart for Cars, Trucks, Vans, SUVs, Motorhomes, RVs, ATVs, UTVs and Trailers . bolt pattern the arrangement of the bolt holes on a wheel. There are lots of tools made for measuring bolt patterns on OEM Rims, but unless you need to do it every day you may not want to go buy another tool to clutter your garage! Common bolt patterns are 4, 5, 6, or 8 lug holes. Bolt circles are measured in both inches and millimeters, therefore you may hear a bolt pattern referred to as both (i.e. How to Measure Backspacing. That will give you the bolt mounting diameter. The distance that you are measuring is the diameter of a … The bolt pattern is merely the number of bolts on the wheel. The correct terminology for referencing bolt patterns is to . Below are a few diagrams to help you measure your bolt pattern with a normal ruler or measuring tape. If you need the 4, 6 or 9 Lug page look here How to measure 4, 6 or 8 lug wheel bolt pattern If you want a more accurate approach check out the Wheel Bolt Circle Calculators Skipping A Bolt Hole In Between. A bolt circle of 4x100 would indicate a 4-lug pattern on a circle with a diameter of 100mm. 3 Bolt Hole with a 9 3/8" Center Hole. Bolt patterns are written with 2 measurements: the number of bolts and the diameter from center to center. Bolt patterns can be 4-, 5-, 6-, or 8-lug holes. 6-lug wheels are measured like 4-lug wheels. The bolt pattern consists of two numbers and looks like this (5x4.50) - the first number in this example "5" indicates how many bolt … If you don’t have the template handy, you measure from the center of any hole, skip a hole in either direction and then measure to the outside edge of that hole. A 5-lug bolt pattern is a little more difficult to measure, but you can easily do that by following the diagram below. say the number of lug holes/studs on measurement, such as : 5 on 4.5 or 6 on 135mm. MEASURE A BOLT PATTERN. You measure 6-lug go-kart wheels the same way you would measure 4-lug wheels. That measurement is your bolt pattern diameter. Lug patterns are measured in either Inches or Millimeters. A bolt circle of 4x100 would indicate a 4-lug pattern on a circle with a diameter of 100mm. Measure from the center of one bolt hole (or stud if it is still one the bike) across the axle hole to the center of the bolt hole on the other side. Measuring bolt patterns is a critical part of ordering wheels. Backspacing is the distance between the back of the rim flange and the mounting pad (where the hub attaches). A bolt circle of 5x114.3 mm would indicate a 5 lug pattern on a circle with a diameter of 114.3mm (or 4.5"). 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