Tires are used on nearly every vehicle. Usually, people buy a complete
set of four tires for their trucks and autos.
Sometimes, people buy two tires for their bicycles.
Sometimes, used tires can be recapped, and sold again.
Then again, some folks buy only one tire at a time, and use it as a spare tire.
Tires and wheels are very important for transportation. Some wheels are very
fancy, and have sculpted rims. Other tire rims are simply utilitarian. Some wheels have spokes.
Carts and wagons also use tires and/or wheels, and usually tires need a wheel or rim to hold them on the vehicle.
New tires can be purchased online, as well as good used tires.
People can grow tired looking for and at tires.