Although garden tractor tires can last a long time, eventually they wear out and will need to be replaced. Garden tractor tires are small, and thus can be more difficult to remove from the rims than larger tires. However, with care and perseverance, replacing a worn tire on your garden tractor is possible.
Let the air out of the tire using the valve. Allow air to escape before completely removing the valve.
Remove the tire valve with the valve wrench. Removing the valve ensures that no air will remain in the tire during the removal process.
Wrap a ratcheting cargo strap around the center of the old tire. Tighten the strap until the tire touches the center of the rim. This will both force any remaining air out of the tire and will help reduce tension on the tire bead when slipping the bead over the side of the rim. The tire bead is the metal or thick rubber that holds the tire against the side of the rim.
Slip a tire spoon under the edge of the bead and lift the bead over the edge of the rim.
Slip another tire spoon next to the first spoon and slowly run the spoon around the rim of the tire, lifting the bead over the rim. If your bead is particularly recalcitrant, spray soapy water on the bead and rim to lubricate the bead to make moving it over the side of the rim easier.
Remove the ratcheting cargo strap once the first bead is off the tire and repeat the process with the second tire bead.
Reverse the process to put the new tire on the rim. In some cases, you can get the new tires started by using your hands and firmly folding the beads over the rim. Be very careful when using tire spoons or screwdrivers not to damage the new tire.
Install the tire valve and inflate the tire once the two beads are in place.