Tire size question

[TNLRAT]

A friend gave me a Huffy Savannah comfort Touring, only number I can find on it is 15108 . The tires are so rotted I can not read sidewall . The rim measures 22 3/4” outside to outside
( diameter) the rim has a depth of 5/8th inch (x’s 2) the inside measurement is 1 1/16th inches not including bead
What size tire do I need
Tanks
Dan

 

[Cycleops]

If it's an older model as suggested by the rotted tyres and a cruiser type it's almost certainly 26". I assume you're in the States, were mostly Brits on here.

 

[Sharky]

Have you taken the tyres off the wheel? The should be markings on the inner tube as well, which could give guidance.

 

[Ajax Bay]

I'll take a guess based on the OP's rim diameter measurement (578mm) and the internal rim width of 29mm that the ETRTO size is 54-571 (26 x 2 1/8 Schwinn cruisers ).