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I went and bought 8 gallons of -50F plumbing antifreeze this morning to put in my rear tires for weight this winter.........Since it rarely gets below -20 around here, I figure I can add some water for extra weight....2 questions

How much fluid will a 8'50x23.5x12 tire hold?

How much water can I add and still get about -30F protection?
 

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table of fluid filled tire capacities:
http://www.tractorsmart.com/Farm_Tractor_Liquid_Tire_Ballast.htm

> How much water can I add and still get about -30F protection?

Table of antifreeze proportions:
http://www.magers.org/handy/antifreeze.html

So you might save one gallon of antifreeze of the 12 gallons to fill your tires. The -50 rating is the point at which the mixture gets slushy, NOT remaining liquid. The antifreeze ratings are intended to prevent pipes and motors from bursting from water expansion.

A sticky post about loading tires:thThumbsU
http://www.mytractorforum.com/showthread.php?t=38370
 
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