Tire is great! Replacing the tire onto a steel rim is hard… In fact, getting the old tire off is no picnic.
1) Let all the air out if it isn't already flat.
2) Break the bead (the seal between the rubber and the steel) all around the tire on both sides.
3) Using multiple screwdrivers (or crowbar(s)), use one to hold the tire edge up while working the other around the tire to lift more edge over the steel rim. Do this on tire side at a time. If this is a throw away tire then you can be rough on the rubber, but DO NOT damage the steel rim.
4) Clean up the inside of the steel rim – I used both acetone and alcohol – being careful not to get it on the valve stem. Clean until the rim area is perfectly smooth.
5) Putting the new tire on requires magic… I discovered the following process. First I soaked the tire in hot water to make it more pliable. After getting it almost hot to the touch and thoroughly drying it, I used an over-the-counter tire lubricant liberally around both edges, both the insides and outsides. Then I discovered it was actually easier to push both sides over the rim at the same time then a single side at a time (this is a small diameter tire still on the dolly, so standing on it was not an option). Using a screwdriver (being careful not to damage the rubber on the tire) I held one edge in and just used my weight to push the hot pliable tire onto the steel rim. Once I discovered this technique, getting the second tire on was relatively straight forward (but I would not call it easy).
6) I used more lubricant as my bead sealer, but they sell bead sealer products which probably work better.
7) Using an old belt, I cinched the outside edge of the tire (squeezed) to make the edges connect to the steel edges of the rim.
8) Added air until tire was pressurized, this creates an airtight bead. Released enough air to get belt back off, then added air up to correct pressure. Checked for leaks using soapy water.
Now I discovered I had a leaking valve stem on one of the tires. I used soapy water to find the leak and it was the valve stem core.
1) Deflated tire
2) Tried to remove the valve stem core, but use of something like fix-flat in the past made this impossible.
3) Broke the tire bead to reach the valve stem for measurement.
4) Purchased the CORRECT size valve stem – there are at least two common sizes, I needed the smaller one.
5) Purchased a valve stem puller – this is to install the new valve stem.
6) Cut old stem off near the base. Pushed remaining valve stem through.
7) Thoroughly cleaned the valve stem area, again with acetone and alcohol, dried it completely.
8) Lubricated the entire area around the hold and the valve stem base (the part that would be pulled through the hole) with tire lubricant
9) Using the valve stem puller, carefully pulled the vale stem into place until seated correctly (Note, the valve stem puller is used like a lever, you screw it onto the end of the valve already poking through the rim, then pull the valve stem into place, then bend the valve stem puller at its joint and use the steel rim as the point of leverage to pull the stem out into place)
9) Reset the bead and reinflated the tire. It holds air now.