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  2. Tire code - Wikipedia

    en.wikipedia.org/wiki/Tire_code

    The DOT code can be found immediately after the letters "DOT" on a tire sidewall. It is useful in identifying tires subject to product recall [12] or at end of life due to age. It is mandated by the U.S. Department of Transportation [13] but is used worldwide. [14]

  3. Uniform Tire Quality Grading - Wikipedia

    en.wikipedia.org/wiki/Uniform_Tire_Quality_Grading

    The UTQG was created by the National Highway Traffic Safety Administration in 1978, a branch of the United States Department of Transportation (DOT). [1] All passenger car tires manufactured for sale in the United States since March 31, 1979 are federally mandated to have the UTQG ratings on their sidewall as part of the DOT approval process ...

  4. Tire - Wikipedia

    en.wikipedia.org/wiki/Tire

    The DOT Code is also useful in identifying tires subject to product recall [107] or at end of life due to age. The Tire and Rim Association (T&RA) is a voluntary U.S. standards organization that promotes the interchangeability of tires, rims, and allied parts. Of particular interest, they publish key tire dimensions, rim contour dimensions ...

  5. Tire uniformity - Wikipedia

    en.wikipedia.org/wiki/Tire_uniformity

    Some tire manufactures mark the sidewall with a red dot to indicate the location of maximal radial force and runout, the high spot. A yellow dot indicates the point of least weight. [1] Use of the dots is specified in Technology Maintenance Council's RP243 performance standard. To compensate for this variation, tires are supposed to be ...

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  9. Tyre label - Wikipedia

    en.wikipedia.org/wiki/Tyre_label

    Rolling resistance is the main key factor in measuring the energy efficiency of a tyre and has direct influence on the fuel consumption of a vehicle. A set of tyres of the green class "A" compared to a "G" class can reduce fuel consumption by 9% [3] of a passenger car; even more for trucks.