Truck Tyres 34 x 7 as 12 ply Olympics

[Paul Singleton]

In my opinion the most dangerous truck wheels were the centre split type used up to the early or mid 1960’s. I know that General Motors used them but I am not sure about other manufacturers. I hated working with them as they would blow apart regularly when on the truck especially if the truck was overloaded.
These rims split in the middle, there were two dimples marking where to start prying them apart. The locking part didn’t go all the way around as the rim needed a spot to allow disassembly. Also in the winter the sand and salt would collect in the rim at the split and cause rusting.