JD 130 front wheel replacement

[dlabrie]

I have an old JD 130 lawn tractor, circa 1986. The front tire had a blowout and needs to be replaced. I would like to just buy a tire and wheel combo but I can't seem to find the correct size wheel.
The tire is a 13x5.00-6. The wheel has a 3/4" shaft, and the hub length is 2 5/8". Any of the wheels I find online say 3" hub.
Is my JD wheel an odd size?
Thanks.