Can anyone tell me what size of wheel/tire originally came on the 1923 Superior?

All the cars came standard with 30 X 3 1/2 clinchers. The trucks came with 31 X 4 front and rear were 34 X 4 1/2. If it really matters, I could check and see if they had an optional balloon tire as was available in 1925.

Actually, the open cars had clinchers, while the closed cars had split rims with modern style beads. If you have a closed car, I may have a set of rims.

I do have a closed car. It's a 4 door sedan and I am interested in getting some rims. Please email me. I'm still learning about these cars and I'm not sure what you mean by clinchers.