How to Measure Width and Bolt Pattern on a Trailer Wheel

Question

Question:

What is the correct way to measure a wheel for width and bolt pattern?

asked by: Garry

0

Expert Reply:

To measure the width of a trailer wheel you will measure from where the tire beads will seat on the wheel. That will be from the inside of the inner wheel flange to the inside of the outer wheel flange, not from edge to edge of the wheel.

To measure the bolt pattern on a wheel with an even amount of lugs ( 4-lug, 6-lug, 8-lug ) you will measure from the center of two bolt holes directly across from each other.

If the wheel is a 5-lug wheel you will measure from the center of one hole to the back edge of the bolt hole straight across from it.

I am including a video that will show you how to measure a trailer wheel.

Also, I am including a link to a FAQ page on measuring a bolt pattern.

expert reply by: Jeff D

0

Answer 1

Thanks for the picture! I would be happy to help you find some tires for your Car Mate Trailer. The 5 on 4-1/2" bolt pattern is the most popular 5 bolt lug pattern found on trailer wheels. You need to measure from the center of one lug to the…

view full answer...

Answer 2

The bolt pattern of a wheel is defined by two numbers: the number of bolt holes and the diameter of the circle (in inches) that they form, measured through the centers of the bolt holes. For example, a 5 on 4-1/2 bolt pattern defines a wheel that has…

view full answer...

Answer 3

Trailer tires are organized by Load Ranges which basically represents the weight capacity for that tire size. So for example the Load Range C trailer tire and wheel part #AM32395 that you referenced has a weight capacity of 1,820 lbs at 50 psi.…

view full answer...

Answer 4

It would seem that the 1,750 rating that your tire has is the weight rating, but most ST205/75-14 tires with a Load Range of C have a 1,870 lb capacity at 50 psi like part #AM10229. That would mean that when you combine the two tires you have an…

view full answer...

Answer 5

Yes, you are correct. If one tire has a maximum weight capacity of 3,640 lbs then a tandem axle trailer with four tires can weigh up to 14,560 lbs. If you can tell me what size tires are on your trailer and the approximate weight then I would be glad…

view full answer...

Answer 6

Trailer wheel lug nuts that are 1/2-inch inside diameter typically have a 20-TPI thread pitch (20 threads per inch). Most lug nuts also use a 60-degree-coned profile like #CE11051, but a 90-degree like #STN569 is also available for 9/16-inch studs.…

view full answer...

Answer 7

As far as features and use the two trailer wheels part #AM20363 and #AM20352 are the same with basically just different finishes. The holes on the silver wheel are round whereas the holes of the white wheel are D shaped.

view full answer...

Answer 8

Your trailer tire size F78-14st is an older tire size. The new label for that tire size is ST205/75D14. They are the same tire basically, but different size label. Your tire size is likely 14 inches instead of 15 inches because to measure the…

view full answer...

Answer 9

There are two different types of trailer hubs that will determine if the pilot hole on a wheel matters or not. First there are hubs that use wheel bolts to secure the wheel to the hub. These are called hub-centric. For this type, the pilot hole has…

view full answer...

Answer 10

A 15x6 inch size wheel is normally interchangeable with a 15x5 size wheel. The 6 inch and 5 inch measurement being the width of the wheel. A tire will normally fit on a range of wheel widths. Where you want to pay attention to the different widths of…

view full answer...

Answer 11

You'll have to get me the bolt pattern and tire size that is stamped on the sidewall of what you currently have on your trailer for me to determine what the correct spare would be.

view full answer...

Answer 12

The 18.5x8.5-8 is actually an old tire size that is not used much anymore. The closest metric size to your existing tire would be 215/60-8. Your wheel most likely has a 5-on 4-1/4 inch bolt pattern (see link), you will want to make sure that the bolt…

view full answer...

How to Measure Width and Bolt Pattern on a Trailer Wheel

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching