Sounds like we both are trying to do same thin,
I was going to ask same question but now that you already have
I'd like to know the answer to this as well? I recently purchased a tractor with very dry rotted rear tires, I know of a good deal for replacements 150 both tires @ 80% tread, although a larger size tire in width, tires on tractor now are 8.3 x 24
the ones I can get are 11. x 24 ,
a new direct size replacement will cost 265 each,
if only I knew the 11. wide would work? I could save $$$$
Maybe someone who knows will chime in soon to confirm