Inevitably a day will come when, despite your best efforts to make them last, your tractor tires need to be replaced. Even a tire beyond its usefulness on the tractor seems like a shame to throw away, but what can you do with an old, worn out tire? Plenty of things! Rather than discarding your old tires in a landfill, put them to use in projects such as gardening, play equipment, garden ponds, or donating them to be broken down into fragments that can be used to make synthetic surfaces such as running tracks. Even if you personally do not have a need or desire to re-use your tires in another way, someone will, so put word out that they are available and watch them disappear! If nothing else, it will save you a trip to that landfill.
One use for old tractor tires is gardening, such as growing both plants and/or vegetables. Based on the depth and circumference of your tires, you can plant several seeds inside and watch them grow. Simply fill your tire with soil and plant whatever you desire to see grow. The sidewalls of the tire will contain the soil and stop it from escaping, thereby nourishing your gardening project and enabling it to flourish.
Another tire use is in the form of a sandbox. Have kids or grandkids in need of a place to play? Take your old tire and fill it with sand, placing an umbrella in the center for shade. Add a few toys, such as plastic sand molds in various shapes and sizes, and hours of entertainment will be yours. Making your tire into a swing is also a kid-friendly option. Simply inspect your tire for cracks or exposed steel that can cause harm, and if it is safe, hang it from a sturdy tree limb by a durable length of rope or chain.
Also possible is making your old tractor tire into a small pond, such as for koi or gold fish or just to display a fountain. To do this, remove the sidewalls and hollow out a small section of ground in which to place your tire. Inside the tire, place a large piece of heavy duty plastic such as visqueen. Let this plastic overlap the outside of the tire and anchor it with flat rocks or other dcor to disguise the edges while at the same time preventing it from moving. Fill with water and add fish.
Last but not least, you could use your retired tires as a livestock feeder. This practice is used for feeding hay to groups of farm animals that are housed and eat together. However, this practice is not without potential problems as animals have been known to trap themselves inside of these tires. If you use this method, be vigilant in order to keep your animals safe.
With a little elbow grease and ingenuity, you can take an old tire and make it into something else and give it many more years of usefulness. Tires take anywhere from 80 to 2000 years to fully break down, so chances are there are plenty of other jobs a tire can do when its days on your tractor are over. Not only will the environment benefit from repurposed tires, but so can you.