A tire (or tyre in British English British English, or UK English or English English , is the broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere. The Oxford English Dictionary applies the term to English "as spoken or written in the British Isles; esp[ecially] the forms of English usual in Great Britain...") is a ring-shaped covering that fits around a wheel A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation while supporting a load , or performing labour in machines. Common examples are found in transport applications. A wheel, together with an axle overcomes friction by facilitating motion by rolling. In order for wheels to rotate, a moment to protect it and enable better vehicle performance by providing a flexible cushion that absorbs shock while keeping the wheel in close contact with the ground. The word itself is derived from the word "tie", referring to the outer steel ring part of a wooden cart wheel that ties the wood segments together.
The fundamental materials of modern tires are rubber and fabric along with other compound chemicals. They consist of a tread and a body. The tread provides traction The units of traction are those of force, or if expressed as a coefficient of traction a ratio while the body ensures support. Before rubber was invented, the first versions of tires were simply bands of metal that fitted around wooden wheels in order to prevent wear and tear. Today, the vast majority of tires are pneumatic Pneumatic power is used in industry, where factory machines are commonly plumbed for compressed air; other compressed inert gases can also be used. Pneumatics also has applications in dentistry, construction, mining, and other areas, comprising a doughnut-shaped body of cords and wires encased in rubber and generally filled with compressed air to form an inflatable cushion. Pneumatic tires are used on many types of vehicles A vehicle is a mechanical means of conveyance, a carriage or transport. Most often they are manufactured (e.g. bicycles, cars, motorcycles, trains, ships, boats, and aircraft), although some other means of transport which are not made by humans also may be called vehicles; examples include icebergs and floating tree trunks, such as bicycles A bicycle, also known as a bike, push bike or cycle, is a pedal-driven, human-powered, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist or a bicyclist, motorcycles A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions, cars An automobile, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the, trucks A truck or lorry (British English) is a motor vehicle, more specifically a commercial vehicle commonly used for transporting goods and materials. Some light trucks/lorries are similar in size to a passenger automobile. Commercial transportation trucks/lorries or fire trucks can be large, and can also serve as a platform for specialized equipment, earthmovers, and aircraft An aircraft is a vehicle which is able to fly by being supported by the air, or in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil (as with vehicles that plane the air with wings in a straight manner, such as airplanes and gliders, or vehicles.
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