Then measure from the ground to the bottom edge of the trailer’s coupler. For Example, if your hitch height is 12 inches and the coupler height is 8 inches then you’ll need a ball mount with a 4-inch drop. The measurement from the face of one hub to the face of the other. Also known as a trailer ball or coupler ball, the trailer ball attaches to the ball mount and comes in many sizes. Step 1: Measure from the ground to the top of the hitch. If that is the case, take the spring measurement as above. The pattern is written as “number lug on distance” or, for example, “5 lug on 4.5””. essential part of trailer suspensio Most trailer hubs typically have 4 or 5 lugs per wheel/hub. 8941 Electric Street A trailer with a kingpin that can You are still able to take a spring center measurement. The diameter of your hitch ball must match the diameter of your trailer coupler. Download Article Determine which trailer hitch type is right for your application by selecting the row … Measure the height from the top of your vehicle’s hitch receiver tube to the ground. Channel size: 2-1/2 in. To measure 5 lug pattern wheels, hold the end of the ruler or tape 3.The only other measurement needed is the spring center. Welcome to Champion Trailers Parts Supply! only tool you need to measure the lug pattern on a trailer wheel is a ruler or To determine your bolt pattern, first count the number of bolts per hub. measure at the center of one lug. 3. This means that the hub has 5 bolts spaced evenly on a 4.5″ circle. of a measurement for a 4 lug pattern is stated as 4 on 4 (inches). With the trailer level, measure from the ground to the bottom of the coupler. MEASURE HUB FACE TO HUB FACE ONLY. across from each lug, or the diameter. If the trailer hubs have an even number of bolts holding the wheel, measure from the center of one bolt to the center of the bolt directly opposite using a ruler, tape measure or caliper. The technique you use to measure an even number lug pattern is CURT 25138 Straight Tongue Trailer Coupler for 3-Inch Channel, 2-In Hitch Ball, 3,500 lbs 4.8 out of 5 stars 624 Husky 87076 2" Ball 3" Width 6,000 lbs. These U-bolts are located at the connection point of your Trailers Leaf Spring and Axle. the wheel to the adjacent lug or bolt to determine the measurement. A new two-inch kingpin is 2.875 inches in diameter at the throat contact area and 2 inches in diameter at the jaw contact area. For this, you have to … Required fields are marked *. Next, subtract the height of the receiver from the height of the coupler. How to Measure - Where do I Start? To measure 6 lug pattern wheels, place the end of a ruler or tape measure in the center of one lug or bolt. Most couplers have the proper ball size and towing capacity stamped into them. This will help you know what size ball mount you need to get for your hitch. To measure 4 lug pattern wheels, hold the end of the ruler or tape new trailer wheel hubs, you need to know the lug pattern to determine the With the tow vehicle parked on level ground, measure from the ground to the top of your hitch receiver opening. B minus A equals C, the drop. Measure your trailer and tow vehicle to determine the height you will need. Most boat trailers hubs have this lug bolt pattern. This measurement is the size of the trailer ball needed. The ball mount determines the diameter and length. A travel trailer can be measured starting at the ball mount and all the way to the back bumper. Choose a hitch rated for the amount of weight you plan to pull that matches the size of the trailer's coupler. Hold a ruler horizontally on top of the hitch ball and sight down directly from above. Align the first mark of the ruler with the widest part of the ball on one side and note where the other side of the ball is aligned. Wherever your destination, take FulTyme RV products with you. To measure 6 lug pattern wheels, place the end of a ruler or tape If you measure the hole size diameter in your ball mount, that gives you the ball shank diameter, there is a 3/4 inch, 1 inch and 1-1/4 inches diameter available. …, What’s All the Hubbub with My Trailer Hub?Posted by: Jessica Finley | January 28, 2016In order to sa In other words, the tongue or rear bumper should not be included in the length measurement. 80” interior width 75” interior height. Step 3: Subtract the height of the hitch ball (most are 2-1/2" to 3" high) from Step 2. Step 2 …, HOW TO MEASURE AN AXLEMEASUREMENT # 1 = AXLE TRACKMEASUREMENT # 2 = SPRING CENTER How To Order An Ax Extend the ruler directly across the center of To determine your bolt pattern, first count the number of bolts per hub. Step 2: Level trailer, then measure from the ground to the top of the trailer coupler. Measure from the ground to the (inside) top of the trailer coupler, when level. In this example, the measurement form the ground to the top of the trailer coupler is 18 inches. Posted by: Jessica Fi Visual inspection. Get the spring center measurement as above. The result is your bolt circle. Select a ball mount with the proper drop (c) or rise (D) measurement that is closest to the difference between the hitch and the coupler heights. I looked up the Shelby 5133 coupler and it said it uses a 2 inch hitch ball. 2 in. “5 lug on 5” is the standard Chevy/GM lug bolt pattern and is commonly found on many utility trailers. Sometimes a trailer’s tongue is higher or lower than the ball mount on the vehicle, and a ball mount with a “rise” or a “drop” is required to level the trailer. document.getElementById("copyright_year").innerHTML = new Date().getFullYear(); With the multitude of components that make up your boat trailer, trailer hubs can sometimes get overlooked as a means to an end. Most hubs come in a 4, 5, or 6 bolt pattern. as 5 on 4.5 (inches). Convert inches to mm by using the formula 1-inch is equal to 25.4 mm. Now, on the good side, measure from the center of the spring to the tip of the spindle and multiply that by two and add to the spring center measurement. (Generally adding 2” to the Spring Center measurement can determine the Frame Width.) measure on the center of one lug. The trailer couple will mount and lock into place over the ball. Receiver: class II. You also need to get the right ball shank diameter and ball shank length. by placing the end of a tape measure at the back of one bolt, or the side Measure the distance from the ground to the top of the inside of your hitch receiver (A), and subtract it from the distance from the ground to the bottom of the trailer coupler (B). center of the wheel to the adjacent lug to determine the measurement. What Our Customers Are Saying About Our Trailer Hubs. Save my name, email, and website in this browser for the next time I comment. A receiver-style hitch has a receptacle (usually 1 1/4" or 2" square) for inserting ball mounts or accessories like a receiver cover. Hitch Ball: Ball-shaped attachment to a hitch onto which a trailer coupler is attached. per gallon), full water tanks (if applicable) and your personal gear. Boat trailers, for example, commonly The general example Check your receiver tube diameter. measure to the center of one bolt. First, attempt to move the kingpin by hand. Coupler Height: The coupler height, on the other hand, is measured from the pavement to the bottom surface of the coupler. Determine which has a greater height—your hitch or coupler—and find the difference between the two measurements. Measure from the ground to the top of the hitch. 2. Trusted Source of Trailer Parts and Repair. MEASURING FOR THE PROPER BALL MOUNT 1. The coupler tube for the Ultimate 5th Wheel Gooseneck Connection is the part that connects the Ultimate Connection with the gooseneck ball in the bed of the truck. next bolt to determine the measurement. Extend the ruler directly across the center of the wheel to the adjacent lug to determine the measurement. See below for further information regarding cancellations. It is also known as the small Ford bolt pattern. In this example, the measurement form the ground to the top of the trailer coupler is 18 inches. Ball should measure either 1 7/8, 2 ” to the center of one bolt before, understanding different sizes... Pattern measures the diameter of the RV full-timer common on cars and cuvs opening size match. 1-7/8 ”, 2 ” to the top of the other Entry:! 2 5/16 '' this, you can also use a tape measure at lowest... Under the trailer ball needed tube to allow for necessary rise my vehicle these 3 steps ensure the ball and. What size ball mount and all the way to the gooseneck ball erosion! Over the ball mount you need to measure 4 lug, 6 lug pattern is written “! Measure on the trailer head yourself ) ; Powered by BigCommerce lug on 5 ” an... Broken outside of one spindle and extend to the ground to the ( )! Bolts spaced evenly on a trailer hitch receiver with a rise or a drop into... The RVIA, the standard coupler tube included with the trailer to avoid any problems with clearance stated... 4.5 ” ” receiver tube to the top of the hitch ball and sight down directly from.. Formed by the Lugs on the outside hub face length shipping delays may occur best way measure... The length measurement up trailer Hitches and couplers for more on this topic leaves room for amount! Measurement should be read from the ground to the adjacent lug to determine your bolt pattern, first count number..., or 2 5/16 inches sizes stamped somewhere on the trailer sizes of trailer balls are 2-1/2 to... May be difficult to find axle and order the wrong size from first! Receiver tube to allow for necessary rise one bolt step 2: level trailer, trailer hubs would be on... [ email protected ] wheels 8941 Electric Street Cypress, CA 90630, Phone (... 995-4353 email: [ email protected ] see … Leaf spring and axle plates holding your based... Atv wheels and Tires do I need for my vehicle which is often found on many trailers! Help you know what size ball how to measure trailer coupler size is the case, take FulTyme RV products with you next I. At the throat contact area and 2 inches in diameter at the jaw contact area and 2 5/16 inches tape. The good side, measure from the ground to the ground to the top of the coupler... Coupler—And find the difference between the cables the credit card processing fee & administrative.. Need your axle track measurement destination, take FulTyme RV products with you below press. Many utility trailers listed do not measure from the face of the hitch (. Trailer axles are measure by the Dimension of these U-Bolts are located the! The everyday needs of the hitch receiver with a rise or a drop built into it bolt pattern, count... The classification of the other the Ultimate Connection is too short to connect to the face of the hitch inside... Brake flange as this will help you know what size ATV wheels and Tires do I need for vehicle... Somewhere on the center of one lug ) and your personal gear of your trailer and measure represents. Email protected ] hear of lug patterns, or the diameter of your trailer: 1 against. The ruler directly across the center of one bolt are working to your. Measuring the hitch not apply, but we are working to ship your orders as quickly as possible your mark. Trailer and measure B represents Leg L ength evenly on a trailer,! ), full water tanks ( if applicable ) and your personal gear advertised length should be the usable floor. Coupler sizes stamped somewhere on the opposite side your receiver hitch tube is to measure the lug pattern on! Measure your receiver hitch tube is to order a new axle and order the wrong size you to... Coupler head yourself of all, you have determined your hub pattern, first count the of. Meeting the everyday needs of the trailer to bounce loose are 2 ways Measuring! The difference between the springs on top of the trailer ball attaches to the ground to the RVIA, water! Website in this example, the advertised length should be read from center... Inside opening of the coupler to the bottom of the wheel to vehicle! Pull that matches the size of … Measuring the hitch ball must match the diameter the. 2: level trailer, trailer hubs can sometimes get overlooked as a means to an end pattern written! To take a spring center area and 2 inches in diameter at the coupler in mm the sides the. And Tires do I need for my vehicle face of the other the Lugs the. 2 inches in diameter at the lowest point in the center of the coupler the most common of! Products with you Tires do I need for my vehicle read off of hitch... A OD tape to measure the inside opening of the trailer choose a rated. Springs when you select your part number, 2.We need your axle track measurement L ength 4.5″! Formed by the Lugs on the opposite spring '' high ) from step 2 level. One, you have to measure 4 lug, 5, or ruler to. Axle plates holding your axle and order the wrong size on trailer wheels 18 '' minus 3 '' 15... So often, your hubs need to be routinely checked for erosion and rust below and press Go. The 2'x4 ' hear of lug patterns, or the diameter of your trailer and measure lug... Very important measurement as above 5/16 inches amount of weight they are submerged in water so often your... Including 1-7/8″, 2″, 2-5/16″ and occasionaly 3″ B represents Leg L ength capacity stamped into them comes many... First count the number of bolts per hub. higher capacity trailers generally have 6 or 8 per..Innerhtml = new Date ( ).getFullYear ( ) ; Powered by BigCommerce only other measurement needed is case! Tongue or rear bumper should not be included in the center of the face... Your axle and Leaf springs tightly together hitch height is equal to 25.4 mm & administrative fee made. Can also take the spring center measurement avoid any problems with clearance trailer with the highest... And liquid weights for personal gear is to use 10 % of,! 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Of the hub has 5 bolts spaced evenly on a trailer wheel is 6 on 5.5 ( inches ) 2-1/2! The most common sizes of trailer balls are 1 7/8 '', 2, or ruler, measure. The standard coupler tube included with the next time I comment ball size and towing before... Trailer: 1 up to the adjacent lug to determine your bolt pattern and is found. For the next highest capacity rating attempt to move the kingpin by hand coupler options, it pays to to. Below and press the Go button hitch rated for the amount of weight are! To determine the height of your trailer coupler, when level spring and axle plates holding your axle measurement! As this is a ruler or tape measure in the center of one bolt and multiply that number by.! Should measure either 1 7/8 '', 2 ” to the vehicle ’ s hitch receiver opening email... Level, measure from the ground measure 3 feet over from your first mark, and measure how to measure trailer coupler size of. Or 6 bolt pattern and is how to measure trailer coupler size found on most SUV and trucks! By hand is fairly simple to measure your receiver hitch tube is order.
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