The term tractor has come to refer to both the machines that you might use in the yard and those that plow the fields of farms around the globe. The two perform very different scales of work though, and a yard tractor's tires cannot really compare to farm tractor tires. The simple fact is that even among farm tractors some simply are not comparable. This is a result of differences in the size of machines and other details.
There are some common elements that you should consider when you select your farm tractor tires though. These elements will likely are some that you have likely given thought to before, but for those that have only recently acquired a farm tractor and are not certain where to begin, this may prove expedient.
Size
There are two considerations when selecting size. The first is that your machine likely has recommendations and restrictions. The second is that your front tires and your rear tires will likely be different.
The rear tires are typically larger and wider. This is done to create greater traction. This can be especially important in some situations. Conversely the front tires tend to be smaller and narrower. This is done to maximize steering capacity. These are essential and the guidelines for the difference should be based on the machine that you are selecting tires for.
Beyond this same machine difference between front and rear there is a more subtle difference. That difference is the range of the minimum size and the maximum size that your tractor's wheels can safely operate with. In most cases there is a significant range to allow for a difference in performance, appearance, and price of the farm tractor tires.
Brand
The brand is an important factor for many people. Some individuals continue to trust the same brands throughout their lives. The consistent quality and performance that they receive results in a more solid trust in the brand. Farm tractor tires are no exception. There are numerous brands available, and different people may prefer different brands.
Some individuals may also prefer to use different brands. This may be based on cost considerations or performance considerations. It is important to note that some brands may be more costly and some brands may offer decidedly different treads.
Cost
Cost is often a consideration with many purchases. With farm tractor tires cost is something that may vary notably. As stated above one brand may be more expensive than another brand when comparing similar tires. There are some ways to balance cost with what you want.
You might consider purchasing a similar tire of a less expensive brand. Another option is to simply purchase a smaller size, within the range of suitable sizes, of the same brand. Often smaller tires cost less.
Used
If you are purchasing spare farm tractor tires or temporary replacements then you may want to consider purchasing used tires. This option may allow you to select the brand and size that you want at a price that you can afford. Similarly, you might be able to find relatively new-condition tires for very low prices.
Keep in mind though that when purchasing used tires you may be accepting responsibility for the safety of those tires.