Our tire's width is 3/4".Pic. 1
Example of a grooved tire for a grooved rim Pic. 2
Example of a flat tire for a flat rim Pic. 3
Measure the rim diameter for both flat & grooved rims; see Pic. 4
Note: Tires are made slightly smaller than the rim's diameter.
Therefore, soak the tires in hot water for 10 minutes or until soft to the touch in order to stretch them over the rims.