There are several sites online that offer used tractor tires. You could also try any farms in your area. If they have a tractor, they may have the old tractor tires saved from previous uses.
If you want to go buy them in person, it depends on your area. There are online dealers, however, that carry used tractor tires. http://www.tiretown.com/rearfarm.htm
A person can buy used tractor tires in Miami at Paul's Tires. Paul's Tires is located at 7601 N.W. 66th St. and can be reached at 305-592-0509.
U Can Use Tractor tires to run A farm Tractor
You could find used tractor tires at any hardware store such as Home Depot or at a tractor specializing store such as John Deere or the like. Also, people in your area may be selling tires.
There are many places to buy used tractor tires in Canada however without knowing which specific region in Canada I would recommend using a site that displays stores in all areas. Such a site can be found at http://www.alibaba.com/countrysearch/CA/tractor-tire.html.
15.5x38 Tractor tire
When you are looking for tractor tires, l would recommend the comparison sites like ebay and amazon. Many tractor tires companies have accounts there, and customer feedback is useful in helping you to decide which tractor tires are suitable for your vehicle.
You can buy farm tractor tires for a tractor if you take the time to do the research. Farm tractor tires can be purchased used or new. There are many types of farm tractor tires you can buy and they also are manufactured in various sizes and styles. Some tires are designed for the type of crops a farmer may be growing. New technology in farming tractor tires has enabled farmers to increase productivity and reduce costs. Find out what size farm tractor tires you will need for your tractor. Check your farm tractor to see which tires may need to be replaced. Do not forget to check the spare tire. Farm tires are made in metric sizes. For example, if you look on the side of the tire you may see the numbers 420/65R20 or 280/85R24 this is one way to determine what size tire you will need. Decide how much money you can afford to pay for farm tractor tires. Stay within your budget and decide if you want to buy new tires or used tires. Try to contact several farm tire dealers in your area to help you buy your farm tractor tires. Start with your local dealer so that you can reduce shipping costs of the tires. Ask for discounts as you get ready to purchase your farm tractor tires. Look for discounts and inquire about warranties and tire mileage warranties. Think also about how you want to pay for the tire, cash, credit card, or check. You may be able to get a discount based on your method of payment. Some vendors may accept a purchase order number as a form of payment and usually the tire company bill you and you pay within an agreed upon time frame. Check also with major farm tractor tire manufacturers to see if they have dealers in your area. Get quotes from several dealers and see what type of pricing they have to offer. Do not be afraid to ask the dealers to let you test their tires on your farm tractors to find how the tires perform. This is how you buy farm tractor tires.
There are many online tractor tire resellers. Most large tire manufacturers sell tractor tires. For example Firestone. You can compare prices on tractor tires at BizRate.com if you want to find the lowest price online.
Many times you can find used tractor tires at tire business around you, I would call around first and compare prices as todays gas prices are insane, or you could always search www.ebay.com for used tractor tires.
www.tiretown.com/rearfarm.htm has them. You could also try a local tractor store.
You could buy farm tractor tires at home depot. They offer a lot of tractor accessories and they will be able to offer durable tractor tires for a low price.