To refrain from blowouts.
Yes, tubeless tires do require air to function properly.
Rubber
Aircraft tires are the same materials that auto tires are, just with a different tread pattern.
The same materials summer tires are made of. They just have a different tread pattern.
Rubber
The comparison of wholesale tires to premium tires is that premium tires are more costly, but are also made to last longer due to better manufacturing materials used to ensure driver safety.
I have found that Michelin and Bridgestone tires are the most expensive of the tires that they sell at my local dealership.
From the research that I have done I have found that the Mastercraft brand of tires is a good tire brand. I have found that they sell a very wide range and selection of tires to suit your needs.
Radial tires typically do not use materials such as natural rubber for the belts, as they are primarily made from synthetic rubber compounds for enhanced durability and performance. Additionally, materials like steel or polyester are commonly used in the belts of radial tires, while materials like wood or cork are not utilized due to their inadequate strength and flexibility for tire construction.
I have found that Sam's Club and Costco have the lowest prices on new tires. They also will replace the tires for you right at both stores. I have found them to be very quick as well.
http://www.epa.gov/osw/conserve/materials/tires/faq.htm try googling next time....
Plies are the construction materials use to make a tire. The body ply is a sheet consisting of one layer of rubber, one layer of reinforcing fabric, and a second layer of rubber. The earliest textile used was cotton; later materials include rayon, nylon, polyester, and kevlar. Passenger tires typically have one or two body plies. They can also be reinforced with steel. Body plies give the tire structure strength. Truck tires, off-road tires, and aircraft tires have progressively more plies. The fabric cords are highly flexible but relatively inelastic.