Dan Thomas wrote:

I'll keep looking, and take Patterson's advice and see if McCreary
still has one.

Might not be a good idea. I checked around a bit, and, according to the Chief
Aircraft web site, McCreary has changed names to "Specialty Tires of America".
This sounds suspiciously like the "STA" you're buying now. They do stock that
size, however. Aircraft Spruce still lists them as "McCreary" and stocks the
2.80/250 x 4. Goodyear, Condor, and Michelin have no listing for that size.
Desser Tire stocks the size but doesn't say who makes it.

Sorry to mislead you.

George Patterson
A man who carries a cat by the tail learns something that can be learned
no other way.