I have four Chryslers with factory wires. Three of them I run tubes in just for safety regarding leaks. I do have one set on our '55 T&C that when the wheels were restored, they used a silicone sealer to cover all of the spokes. When I took delivery, I was told not to mount tires for a few days to let the silicone set up. That was almost 18 years ago with no issues. I've recently replaced those bias tires, Remington L78x15 with 235x75x15 Diamond Back radials. Once again zero problems.
John Lazenby