Fill Tires WW vs CaCl

1444 Views 8 Replies 7 Participants Last post by JB222, Dec 6, 2011

JB222

Discussion Starter · Dec 4, 2011

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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Bob Mac

· #2 · Dec 4, 2011

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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