It looks like there was a 26 and a 28 inch rim, but the only 24 inch I can find was used for turf tires on the 550. The 550 replaced the Super 55.

The rims listed are for 10-28 tires and for 13-26 tires. The tire size numbers have changed since then. You'll find the 13.6-26 tire is VERY pricey, and you'd be farther ahead to get 12.4-28 for half the money.