Tire
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A tire or tyre is a ring-shaped component that surrounds a wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide traction on the surface over which the
Tire on a truck
Assorted new automotive road tires, showing a variety of tread patterns.
Tractor tires have substantial ribs and voids for traction in soft terrain.
John Boyd Dunlop on a bicycle, c. 1915
Synthetic rubber
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A synthetic rubber is an artificial elastomer. They are polymers synthesized from petroleum byproducts. About 32 million tonnes of rubber is produced annually in the United States, and of that amount
Tire
…the bearing on the surface that it rolls over by exerting a pressure that will avoid deforming the surface. The materials of modern pneumatic tires are synthetic rubber, natural rubber, fabric, and wire, along with carbon black and other chemical compounds. They consist of a tread and a body. The tread provides traction…
John Boyd Dunlop (c. 1915)
Sheet of synthetic rubber coming off the rolling mill at the plant of Goodrich (1941)
World War II poster about synthetic rubber tires