JB - To the best if my knowledge your rims are 3 piece design that pretty much mirrors the design of some of the larger trucks 3 piece wheels.
Technical jargon aside, they are commonly called a split ring design.
The main wheel section and outer “side ring” are one piece, with no split or separation. The “clamp ring” is a split ring that gets wedged in between the main wheel and side ring.
It acts as the locking ring when the tires are inflated.
Definitely check with yiur local shop to see if they will work on them. Most big truck shops work on these regularly and gave the proper safety equipment to do it right.
Others with more direct experience should be along soon to offer their input.
