What diameter are they?

7:00-18 was popular back then, been hard to find tires for years. Rims should be safe if not rusted & done by someone who knows what to do.
These shouldn't the Firestone rh 5 window makers.
Post a picture of the wheel.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022