Grigg and Overgripped,

Thanks for your responses. After very careful inspection and checking the manufacture date, I purchased four new/old (several years old, but never mounted) tires today. I plan to mount 2 of them and keep the others for spares.

Oldbolter
1959 Apache 3800 dually flat bed/dump with 261
1956 3800 dually flat bed/dump with 235
1957 3600 flat bed, 350 engine, 700R4, PS, disc brakes, 14 bolt rear with 4.11 gears