The top post by RP14 shows photos of the Firestone type AR not the dreaded type RH-5.
That rim he has is a 3 part rim with lock ring
It’s safe if handled with respect and proper care and still usable to this day. Not illegal and some truck shops will service them.
-s
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Last edited by 2ManyTrucks; 07/26/2022 2:44 PM.