you have to add air to put pressure in the tire. It would be hard to completely fill the tire and pressurize it with fluid and removing all air. I thought you want to put fluid in a tube, not in the tire itself. But hey that's just me.My understanding is that you want to keep all metal (rims) submerged in liquid at all times so you fill the tires with liquid to above the rim line. Filling with air is needed so there is some cushion in the tires.
I thought i would share my calcium ballast fill on my new tractor. I have a 55 gallon pto powered spray tank. Filled it with water and 200 pounds of calcium ice melt. I had to take my time adding the calcium due to the heat and keeping the lines from plugging. I replaced the wand with a blow off nozzle with the aluminum top drilled out to ~1/8". Worked well and was inexpensive. View attachment 461457View attachment 461458