Loaded rear tire mystery?

[UPFord]

I have a Ford 445C industrial with Titan 16.9 x 24 R4 tires, with tubes installed and loaded with calcium chloride fluid. I've had the tractor for 12 years and the tires were near new when I got it.
One tire has leaked a very tiny amount of fluid for as long as I have had it, but the air pressure in the tube has not declined in six years. I've found the spot on the sidewall where it leaks, it's a tiny hole the size of the tip of an icepick.
Is it possible that when the tube was installed in the tire, that some fluid was left in the tire casing and was trapped between the outside of the tube and the inside of the casing? And the tire casing has a pinhole leak in it and the pressure in the tube is pushing the fluid through the small hole?
I'd like to not have any calcium chloride fluid in contact with the steel wheel rim, but since the air pressure in the tire doesn't go down, I haven't dismounted the tire to see what's going on.

 

[Jim.ME]

I have a Ford 445C industrial with Titan 16.9 x 24 R4 tires, with tubes installed and loaded with calcium chloride fluid. I've had the tractor for 12 years and the tires were near new when I got it.
One tire has leaked a very tiny amount of fluid for as long as I have had it, but the air pressure in the tube has not declined in six years. I've found the spot on the sidewall where it leaks, it's a tiny hole the size of the tip of an icepick.
Is it possible that when the tube was installed in the tire, that some fluid was left in the tire casing and was trapped between the outside of the tube and the inside of the casing? And the tire casing has a pinhole leak in it and the pressure in the tube is pushing the fluid through the small hole?
I'd like to not have any calcium chloride fluid in contact with the steel wheel rim, but since the air pressure in the tire doesn't go down, I haven't dismounted the tire to see what's going on.

I don't see how you can address your concern fully without dismounting the tire and checking it.

 

[Bob Bancroft]

I have a Ford 445C industrial with Titan 16.9 x 24 R4 tires, with tubes installed and loaded with calcium chloride fluid. I've had the tractor for 12 years and the tires were near new when I got it.
One tire has leaked a very tiny amount of fluid for as long as I have had it, but the air pressure in the tube has not declined in six years. I've found the spot on the sidewall where it leaks, it's a tiny hole the size of the tip of an icepick.
Is it possible that when the tube was installed in the tire, that some fluid was left in the tire casing and was trapped between the outside of the tube and the inside of the casing? And the tire casing has a pinhole leak in it and the pressure in the tube is pushing the fluid through the small hole?
I'd like to not have any calcium chloride fluid in contact with the steel wheel rim, but since the air pressure in the tire doesn't go down, I haven't dismounted the tire to see what's going on.

I have a saying that "anything is possible". So, I'd say yes.
We used to get into all kinds of things. Guy bought a new, small combine. We removed the drive wheels/tires, had the rims widened, and installed rice and cane tires. We had a short handled, very large hammer. Basically a sledge hammer with a regular hammer handle. It was handy for certain things, one of them being tires. Hammer came up missing. Guy had a flat on his combine a few years later. Guess why?

 

[Ray,IN]

The CC will, and has leaked outside the tube and onto the metal rim. Do it right the first time or plan on buying a new rim in the future.

 

[showcrop]

Whatever damage you may be getting to the rim is oxidation. Oxidation uses up oxygen. If you aren't adding any air, no oxidation is happening.

 

[Sean in PA]

Whatever damage you may be getting to the rim is oxidation. Oxidation uses up oxygen. If you aren't adding any air, no oxidation is happening.

On tubed tires, air can move in and out of the tire without moving in and out of the tube just from flex. The beads on tubed tires do not make a perfect seal with the bead on the rim. That's why they need tubes.