How to get the right trailer replacement tire/rim?

I'm a 60+year old woman with a problem - I have a Hobie 14 and need to replace the tires and rims. There are 4 lug nuts. My son-in-law can help me change the tires, but I need to order the replacement first and don't want to get the wrong one.
I've looked at the "how to measure tires" online but the problem is the hub/center part is there and I can't accurately measure the center of the two opposing lug nuts because it protrudes out about 3 inches.
Was/is there a standard tire size for Hobie 14 / Hobie 14 Turbo trailers that were purchased in 1983? It appears to be somewhere between 4 and 5 inches just from holding a yardstick up to it. I can't look at the tire because it is so old it is cracking and no raised specs are visible.

Lug patterns are standard... either 4 or 5 lugs typically.

You can get spares that are hub and tire from parts stores or Walmart.

I would guess 8" if the lug pattern is 4.



https://www.easternmarine.com/loadstar-480x8-trailer-tire-galvanized-rim

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Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)

These older axles are common to utility trailers as well and the 4-hole by 4 inch bolt pattern has been the standard for years.

Trailer tire/wheels you can find at Harbor Freight, Northern Tool, Wal-mart, etc. in 4-hole bolt pattern will fit your trailer.

Main choice will be 8" or 12"

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1984 H16 "Mister Rogers"
1984 H14 "Sundays"
2000 H20 "Jet"
Sheet In, Max Out

Almost certainly either 4.80-8 or 4.80-12 (8” or 12” respectively). Measure the diameter of the rim to know for sure.

sm

If you have 8" tires, I'd swap to 12" if there is fender room. Better ride, easier on the bearings (bigger wheels turn much more slowly). Also, radial tires cost considerably more than bias ply tires but they track and ride 100% better. I recently swapped to radials and the trailer pulls noticeably easier.

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Yet another Bob!
"Firefly" - 2012 Hobie Getaway with wings and spinnaker
"Sparky" - 1978 Sunfish (OK, it's not a Hobie, but it's a fun little craft)
Too many canoes and kayaks

Here's my search results from "etrailer". Mu go-to for trailer stuff.
https://www.etrailer.com/dept-pg-Traile ... _Inch.aspx

_________________
Yet another Bob!
"Firefly" - 2012 Hobie Getaway with wings and spinnaker
"Sparky" - 1978 Sunfish (OK, it's not a Hobie, but it's a fun little craft)
Too many canoes and kayaks