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Part of the issue is that IF you have the smallest of leak or seep, it can go un-noticed for years and years. Through this time, the wheel rim DOES notice and is rusting away. We, the now-owners of the older iron, are paying the penalty of long term exposure of rims to calcium fluid. Even as we look to acquire a "new" old tractor, it can be tough to know whether the rims are sound or not long for this world. As others have recently mentioned, the calcium is nice 'cause it's heavy and it's cheap. The downside, and there always seems to be one, is corrosion. If you can *guarantee* absolute zero leakage, the rim will outlast the tractors AND their owners. Life gives few guarantees, tho. Me?? I have calcium in one side, the other will get it after I buy a new tire (and tube). **My first choice would be depleted uranium wheel weights, I could add LOTS of weight and hardly notice it being there, it is REALLY dense!!** Then if there was a leak, it would only be air, and that doesn't corrode much or need to be wiped up## duey
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