RH5 centre split wheels.
Back in the seventies a friend's father had a septic tank pumping business. He purchased a used but very good condition 1961 GMC truck and installed a vacuum tank on the truck to pump septic tanks. The very first time he loaded the truck the right rear inner wheel blew apart. The wheel wasn't rusty and when examined the folded lip that held the wheel together simply straightened out and let the wheel separate. He purchased six new wheels of the lock ring design to replace the original wheels. The tire guy said that it was common for the centre split wheels to blow apart if the vehicle was overloaded! The tire size was 8:25-20. When looking at the design of the wheel you will realize that the wheel actually only locks together on about two thirds of the diameter.
I personally would not use them.
Paul
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