A tire (in American English and Canadian English) or tyre (in some Commonwealth Nations such as UK, Australia and New Zealand) is a ring-shaped covering that fits around a wheel rim 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 may be derived from the word "tie," which refers to the outer steel ring part of a wooden cart wheel that ties the wood segments together (see Etymology below).

The fundamental materials of modern tires are synthetic rubber, natural rubber, fabric and wire, along with other compound chemicals. They consist of a tread and a body. The tread provides traction while the body ensures support. Before rubber was invented, the first versions of tires were simply bands of metal that fitted around wooden wheels to prevent wear and tear. Today, the vast majority of tires are pneumatic inflatable structures, 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, such as cars, bicycles, motorcycles, trucks, earthmovers, and aircraft.

Read more about Tire:  Etymology and Spelling, History, Manufacturing, Associated Components, Performance Characteristics, Vehicle Applications, Sound and Vibration Characteristics, Safety

Other articles related to "tire, tires":

Self Aligning Torque
... torque, SAT, or Mz, is the torque that a tire creates as it rolls along, which tends to steer it, i.e ... In the presence of a non-zero slip angle, this torque tends to steer the tire toward the direction in which it is traveling, hence its name ... still be generated due to asymmetries in the tire's construction and the asymmetrical shape and pressure distribution of the contact patch ...
Michelin PAX System
... The Michelin PAX is an automobile run-flat tire system that utilizes a special type of rim and tire to allow temporary use of a wheel if its tire is punctured ... It provides support to the tire and its sidewall to allow emergency operation at limited speed until such time the tire can be replaced ...
Tire, İzmir - Economy
... Tire municipality's anteriority in terms of its date of constitution was reflected in a number of other fields, which indicates an interest in the region by investors of the late-19th century ... started to be laid in 1893 and a 137 km line connecting Tire and its eastern neighbor Ödemiş to that main axis to the west, itself the very first line placed in the History of rail transport in Turkey, was ... average per capita income situates Tire roughly in the middle among depending districts of İzmir Province ...
Lawrence Square Shopping Centre - Mall - Retail Tenants
... The anchor stores are Canadian Tire, Fitness One (women-only gym), Zellers (will become a Target), and Fortinos ... two locations lower formerly PharmaPlus upper formerly part of Canadian Tire Payless ShoeSource - formerly a Scotiabank branch Public Mobile - opened mid-2011 Reitmans Si ... Canadian Tire's upper mall entrance was closed off during renovations during the late 2000s ...
... Tornel o Hulera Tornel is a Mexican enterprise and only surviving tire producer in Mexico, dedicated to making tires and other automotive industry-related products ... businessman Armando Tornel, who in October 2006 entered the Worldwide Tire Industry Hall of Fame ... Tornel has been consolidated, making it the top Latin American tire producer, and one of the largest in the world ...

Famous quotes containing the word tire:

    If we tire of the saints, Shakspeare is our city of refuge.
    Ralph Waldo Emerson (1803–1882)

    Never tire yourself more than necessary, even if you have to found a culture on the fatigue of your bones.
    Antonin Artaud (1896–1948)

    If you set to work to believe everything, you will tire out the believing-muscles of your mind, and then you’ll be so weak you won’t be able to believe the simplest true things.
    Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)