My experience with Solideal tires was a pair of 10.00 X 16.5 R4's for the front of my JD 4320. They were more than 1" narrower and about an inch shorter than the original Titans. Diameter is undersize enough to cause 4wd hard to engage and disengage.
I find when shopping on the internet I have better luck using part numbers rather than descriptions.
These are the 72" blades with 1-1/8 holes I found on various websites:
Oregon:
Stens:
330-801 Standard 24 1/2 1-1/8 2.5" .250
302-837 Toothed 24 1/2 1-18...