I seen a few tires (don't recall who sold them) that had the same tire size stamped on tire but was smaller than the original tire that came on tractor.
I ran into this on a zero turn mower..this one was a Carlisle same size on tire but was about 1" taller, but fit the rim fine.
I ran into this on a zero turn mower..this one was a Carlisle same size on tire but was about 1" taller, but fit the rim fine.