Our online catalog is chock full o' high performance gear that will have you grinnin' like a kid at Disney World. 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. Learn how to determine the bolt pattern on your trailer. 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. The bolt pattern spacing can also be measured with a regular tape measure. Thousands of how to measure bolt pattern reviews, same day shipping. Bolt pattern measurements are typically taken in millimeters. Here’s the cheat sheet. Bolt Circle Diameter . 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. Measuring the wheel bolt pattern on your vehicle is necessary if you are in the market for aftermarket wheels. Trailer wheel bolt 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. A 5-lug bolt pattern is a little more difficult to measure, but you can easily do that by following the diagram below. On some cranks, like 4 bolt cranks, it’s fairly easy to measure, but for road and cyclocross with 5 bolts, it’s not so easy. Four (4) Bolt. 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! 5-lug bolt patterns are a little trickier to measure since the bolt holes aren’t directly across from each other. 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 diagrams below indicate the proper measuring methods. 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 A bolt circle of 4x100 would indicate a 4-lug pattern on a circle with a diameter of 100mm. 4 X 156 Bolt Pattern Measurement and Specifications. How to Measure Backspacing. Click for larger. You have 4 lug (bolt) rims on your machine, but I will show 3 and 5 bolt rims also. Measure Trailer Wheel Bolt Pattern. Bolt circles are measured in both inches and millimeters, therefore you may hear a bolt pattern referred to as both (i.e. 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. Bolt patterns are written with 2 measurements: the number of bolts and the diameter from center to center. To get 5 and 7 lug bolt patterns it's not so simple. 3 Bolt Hole with a 10" Center Hole. Bolt pattern or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs. Other common bolt patterns are 5×4.75 and 5×5. The bolt pattern consists of two numbers and looks like this (5x4.50) - the first number in this example "5" indicates how many bolt … 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. Ea 5x114.3 mm is also referred to as 5x4.5). When measuring the distance between the bolt holes on any wheel, it is important to keep in mind that that patterns with an even number bolt holes (4, 6, or 8 holes) are a lot easier to measure than patterns with an odd number bolt holes (3, 5 or 7 bolt holes). You measure from the BACK of one lug (skip to next lug as shown) and to the CENTER of that lug. Wheel Bolt Pattern is the measured diameter of an imaginary circle formed by the centers of the wheel studs or bolt holes. First, measure the center to center distance between two studs that are across the hub from each other. The closest you can get is to measure from the center of one lug to the outer edge of the lug farthest away. You need this number in millimeters (mm). A 5-lug pattern is where things can get confusing. 4-lug bolt patterns are measured in a straight line from center to center of the two bolt holes directly across from each other. bolt pattern the arrangement of the bolt holes on a wheel. 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. 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. 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. Bolt patterns can be 4-, 5-, 6-, or 8-lug holes. 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. The diagram indicates the proper measuring methods. Backspacing is the distance between the back of the rim flange and the mounting pad (where the hub attaches). Bolt Circle Diameter (BCD) is the diameter of the circle that goes through the center of all of the bolts on your chainring. Measure Bolt Hole Center to Bolt Hole Center. 6-lug wheels are measured like 4-lug wheels. Figuring out the right bolt pattern is rather simple, but it is extremely important that the measurements are accurate. Below are a few diagrams to help you measure your bolt pattern with a normal ruler or measuring tape. Measuring bolt patterns is a critical part of ordering wheels. Lowest price guaranteed. As all 6 bolt holes are evenly spaced out in a circular pattern, simply select two opposite bolt holes. A bolt circle of 4x100 would indicate a 4-lug pattern on a circle with a diameter of 100mm. You can estimate the measurement by using a straight line from the backside of one hole to the center of the third bolt hole. In order to find the right wheel for your trailer, you will need to know the bolt pattern. You measure 6-lug go-kart wheels the same way you would measure 4-lug wheels. Interchangeable Wheel / Bolt Pattern Chart for Cars, Trucks, Vans, SUVs, Motorhomes, RVs, ATVs, UTVs and Trailers . Measure from the middle of one stud to the outside of the second stud (skipping a stud). If you were to draw a circle through all of the lug holes in your wheel, the diameter of that circle, is your bolt pattern. Basically, the bolt pattern of a wheel is the diameter of the circle that the bolt holes are drilled on. That should get you your bolt pattern measurement. We cover how to measure odd hole patterns … Using the illustration below as guide, measuring backspacing is a simple two-step process. The diagram (upper, left) indicates the proper measuring methods. Measure center to center of two holes directly across from each other. The first concept one must be familiar with to understand bolt patterns is called BCD, for Bolt Circle Diameter.If you lay one of your wheels on the ground and draw a circle that passes through the center of each of the lug holes, that is the Bolt Circle, and it only remains to measure the diameter of said circle. Online Catalog. The majority of boat trailers on the road have a 4, 5 or 6 lug pattern. For vehicles that use 4, 6, or 8 lugs, the simplest way to find its inner diameter is to measure the distance between holes directly across from one another. 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. In your situation it will probably end up as 10 7/16" or so which is the 10.5" pattern That measurement is your bolt pattern diameter. That will give you the bolt mounting diameter. Common bolt patterns have 4, 5, 6, or 8 lug holes, while less common have 3, 7, or 10 lug bolt patterns. If the numbers match, that does not necessarily mean the bolt pattern will fit. On the new set of wheels you found online, they are listed as 5×100. 3 Bolt Hole with a 9 3/8" Center Hole. Once you’ve selected them you should see that there is a 2 bolt hole gap on both sides. On bicycle chainrings this dimension is usually measured in millimeters. 4 Bolt Rim. Now, measure the center of the two bolt holes you selected. This means they are a 5-lug pattern with a diameter from lug-to-lug of 100 millimeters. You can estimate the measurement unless accurately measured using a bolt pattern gauge. Common bolt patterns are 4, 5, 6, or 8 lug holes. Determining the bolt pattern is rather easy, but it is very important that accurate measurements are taken. Therefore, take a few minutes to measure the wheel bolt pattern so that you purchase the correct wheels for your car. 6-lug wheels are measured like 4-lug wheels. The bolt pattern is merely the number of bolts on the wheel. The distance that you are measuring is the diameter of a … 5-bolt patterns can be more difficult to measure since the bolt holes are not directly across from each other. This is how to measure your tire bolt pattern based on your specific lug count. A "bolt pattern" is essentially the diameter of the "bolt circle". 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. Stay Connected. 6 Bolt with a 10" Center Hole. If there are 5 studs, multiply the measurement by 1.05 to get the bolt pattern diameter. 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. To measure 5 lug pattern wheels, hold the end of the ruler or tape measure to the center of one 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. Now that you know how to measure lug bolt patterns, here … If you have 5 or 7 studs, you will have to take an extra step to determine the bolt pattern. Measuring for 4, 6, and 8-Lug Wheels. Below we illustrate how to measure … Measure the bolt patterns of the rim. say the number of lug holes/studs on measurement, such as : 5 on 4.5 or 6 on 135mm. A 4 bolt wheel with 100mm between opposite bolt holes would be written as 4/100. Bolt measurements can be calculated in millimeters or inches, but bolt measurements specified in inches are international. As the bolts will be evenly spaced, the number determines the bolt pattern. Some wheels have more than one bolt pattern on the same wheel to accomodate multiple fitments. The correct terminology for referencing bolt patterns is to . MEASURE A BOLT PATTERN. The number you see will be the actual measurement of the bolt pattern. This is where the rim sizing starts to get a little tricky. To measure your bolt pattern, pick the illustration below that represents your wheel stud pattern and measure as described below each illustration. So a 4x100 bolt pattern means that there are 4 lugs, with a diameter of 100 millimetres (3.9 in). It is critical to know the BCD of your crankset when you are selecting a new chainring for your bike. Skipping A Bolt Hole In Between. Just a heads up, you’ll need a calculator for this. 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