So many cars can be seen today. All those cars travel on tires. There are a wide variety of sizes and types of tires available. Some tires are for trucks while others are for smaller vehicles. After a certain time the tires wear out. When that happens you have some decisions to make. You need to do something with it. In the tire outlets if you go there for buying new tires they generally take those tires off. Sometimes the tires are discarded. Other times, they determine if there is tread life on them and put them up for sale to people who are just looking for a spare.