The Schwinn 24" S-5 and S-6 rims are oddities in that although they are supposedly meant for 24 x 1-3/8 nominal size tires, which would normally fit a rim with a 540mm bead seat diameter, the Schwinn rims have a larger 546mm bead seat diameter, which normally corresponds to 24 x 1-1/4 or 24 x 1-1/8 nominal size tires. Schwinn tire sizes are unique to Schwinn. The Schwinn 24 x 1-1/4 tire (ISO 20-546) is meant for an S-6 rim and 24 x 1-3/8 tire (ISO 22-546) is meant for an S-5 rim. I would guess that the Kenda would work.