How to Measure for Offset on Trailer Wheel

Question

Question:

I see that you have wheel offset. I am not sure how to measure this. I am use to wheel backspacking- measured from back mounting surface of the wheel to the outer edge. usually anywhere from 3.5inch to 6inch for a normal wheel. I lost my spare wheel/tire. So I am trying to match a new wheel to one of the existing that I have on my fifth wheel.

asked by: Scott

0

Expert Reply:

Wheel offset is very similar to backspacing and refers to the location of a wheel's rim in relation to the wheel's center. Most trailer wheels have a 0 offset, but to determine if the wheels on your trailer have one, you will first want to remove the wheel from the trailer. Once removed, you can measure from the mounting surface of the wheel (where it mounts to the hub) to the inside and outside beads. The difference between these two measurements is the offset.

The HWT Aluminum Hi-Spec Series 03 Mod Wheel # TAM22657 that you were looking at has a negative 8 millimeter offset. This means that the mounting surface on the wheel actually moves 8 millimeters towards the trailer, essentially moving the tire away from the trailer. Also note that this wheel has a 8 on 6-1/2 inch bolt pattern. I have attached an article that explains how to measure your bolt pattern to ensure you are picking out a compatible wheel.

I have attached a short video demonstration on this wheel along with a link that will take you to our available selection of trailer wheels that you can look through.

expert reply by: Chris R

0

Answer 1

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Answer 2

I am pretty sure that the axle you are in need of is a 7k axle that has 95 inches from hub face to hub face and 80 inches from spring seat center to spring seat center which we do have a replacement for with the part #8327834. I would recommend you…

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Answer 3

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Answer 4

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Answer 5

You should never change the wheel offset on your trailer or use different offsets on tandem axle trailers. Your axles should match, as should your tires. Your wheels can differ in style, but they should not differ in offset. This basically means your…

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Answer 6

Based on the dimensions you listed it sounds like you have a number 42 spindle. All you need to do now is verify that the surface of the spindle where the seal rides is 2.24 inches. If so then the trailer hub like the part #42866UC3 would fit and…

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Answer 7

The Dexter Trailer Hub and Drum Assembly part #8-219-18UC3 fits 7K axles and it has a 4.75" pilot with 9/16" studs so it will work with most hub piloted 17.5" wheels like the Provider 215/75R17.5 Radial Tire w/ 17-1/2" Silbrt Mod…

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Answer 8

It might be possible to change out the studs in your hub from 9/16 to 5/8 if they are drive-in studs and not the type that threads in. If they are drive in and the diameter of the knurl end is approximately 0.6875 inches then you can replace them. We…

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Answer 9

Most trailer wheels have a zero offset. This is because a zero offset allows the wheel to handle the maximum load by distributing the the load equally to both sides of the wheel. To determine if your trailer wheels have an offset, you will want to…

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Answer 10

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Answer 11

Let's first start with measuring the bolt pattern. If a hub or wheel has an odd number of holes/studs then you measure from the center of one hole to the center point between the 2 holes across from it. If it had an even number you would measure…

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Answer 12

There is a solution for you, but the lift kits you referred to such as #K71-725-02 will not work with welded on torsion axles. The best option is for you to simply remove your torsion axles and use the Timbren Axle-Less Trailer Suspension System…

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How to Measure for Offset on Trailer Wheel

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