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Measuring Bolt Pattern of Your Trailer Wheel  

Question:

I am shopping for a trailer tire or tire and wheel for my jet ski trailer. It has a 5 bolt pattern. How do I measure it for the 4-3/4 inch or 4 1/2 inch pattern ?

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Expert Reply:

A 5 on 4-1/2 pattern means that you have 5 lugs that are spaced evenly around a circle that has a diameter of 4-1/2 inches. And the same for a 5 on 4-3/4 pattern.

To determine which you have you need to measure from the center of one lug to a point halfway between the two lugs directly opposite on the bolt circle. Your measurement will either be 4-3/4 inches or 4-1/2 inches. The 4-1/2 is much more common, so that's likely what you have.

Another way to measure is to find the distance from the center of one bolt hole to the center of the next. If your measurement is 2-5/8 inches you have a 5 on 4-1/2 inch, if it is 2-3/4 inches you have a 5 on 4-3/4.

I've attached a help article on this as well.

If you provide me with the tire size you're looking for I'd be happy to recommend a particular wheel/tire combination.

expert reply by:
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Charles S

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