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  2. Uniform Tire Quality Grading - Wikipedia

    en.wikipedia.org/wiki/Uniform_Tire_Quality_Grading

    Uniform Tire Quality Grading, commonly abbreviated as UTQG, is a set of standards for passenger car tires that measures a tire's treadwear, temperature resistance and traction. The UTQG was created by the National Highway Traffic Safety Administration in 1978, a branch of the United States Department of Transportation (DOT). [ 1 ]

  3. Tire tread - Wikipedia

    en.wikipedia.org/wiki/Tire_tread

    The tread of a tire or track refers to the rubber on its circumference that makes contact with the road or the ground. As tires are used, the tread is worn off, limiting its effectiveness in providing traction. A worn tire can often be retreaded . The word tread is often used casually to refer to the pattern of grooves molded into the rubber ...

  4. Tire - Wikipedia

    en.wikipedia.org/wiki/Tire

    Dry traction: Dry traction is the measure of the tire's ability to deliver traction, or grip, under dry conditions. Dry traction is a function of the tackiness of the rubber compound. [26] Force variation: The tire tread and sidewall elements undergo deformation and recovery as they enter and exit the footprint. Since the rubber is elastomeric ...

  5. Tire code - Wikipedia

    en.wikipedia.org/wiki/Tire_code

    The DOT code [1] is an alphanumeric character sequence molded into the sidewall of the tire and allows the identification of the tire and its age. The code is mandated by the U.S. Department of Transportation [2] but is used worldwide. [3] The DOT code is also useful in identifying tires subject to product recall [4] or at end of life due to age.

  6. Siping (rubber) - Wikipedia

    en.wikipedia.org/wiki/Siping_(rubber)

    Siping (rubber) Siping is a process of cutting thin slits across a rubber surface to improve traction in wet or icy conditions. Siping was invented and patented in 1923 under the name of John F. Sipe. [1][2] The story told on various websites is that, in the 1920s, Sipe worked in a slaughterhouse and grew tired of slipping on the wet floors.

  7. Tire uniformity - Wikipedia

    en.wikipedia.org/wiki/Tire_uniformity

    Tire forces are divided into three axes: radial, lateral, and tangential (or fore-aft). The radial axis runs from the tire center toward the tread, and is the vertical axis running from the roadway through the tire center toward the vehicle. This axis supports the vehicle's weight. The lateral axis runs sideways across the tread.

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