I had to replace the rims on my tractor at 14 years because the CC ate the rims at the valve core. I used beet juice in the new rims...Never heard of that happening! Around here they have a tub of water with some dry? chloride in it, keep adding until it reaches the saturation point and we have chloride on the bottom, undisolved. Pump out the liquid from the top and start over. Ohio is right about the corrosion. Beet juice is a lot nicer to use and it won't mess up your air gauge, valve core or rim!