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Fill Tires WW vs CaCl

1444 Views 8 Replies 7 Participants Last post by  JB222
I am trying to decide if I should use windshield washer fluid or salt water (CaCl mixture) to fill my tires. I already have inner tubes and thought the additional weight of the CaCl mixture might be worth it. I know at some point the valves will corrode, but that is an easy fix.
My 23 x 8.5 x 12 rear tires should hold around 6 gallons 12 between the two of them. So WW would be roughly 42 pounds per tire and 84 total. A CaCl mixture should be roughly 30% heavier so around 54 pounds per tire and 108 total.
what are your guys thoughts on the value of the additional 25 pounds for traction vs. the potential corrosion from a CaCl mixture?
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My former 1985 448 had CaCL filled rears with innertubes. The valve stems corrode fairly quickly and no matter what or how, the rims rust on the outside. 5 or 6 years ago I filled two 16" rears for a friend. We installed innertubes and powdered them and the tire interior. I used a vacuum pump to suck down the innertubes, hooked up a hose to a large container and poured in WW. The innertubes drew in a large amount of the fluid before I had to use a pressure container to final fill. While filling, the air trapped between the innertube and tire interior needs to vent out around the valve stem.
Bob MacGregor in CT
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