Sorry, don't know. Might consider Harbor Frieght, they sell all kinds of small wheels, like for wheel barrels.
In that size ... highly doubtful. Call. The good news they always promptly answer by a live person. Good luck.
Call ahead
Best to call and ask. They dont always have every size in stock at all times, but they can call a neighboring America's Tire (like the one in Thousand Oaks) to get it.
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