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  2. Uniform Tire Quality Grading - Wikipedia

    en.wikipedia.org/wiki/Uniform_Tire_Quality_Grading

    UTQG ratings on sidewall of Toyo Tires Proxes R39 tire UTQG ratings (top) and tire code (bottom) on sidewall of Continental ContiProContact tire. 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.

  3. Tire code - Wikipedia

    en.wikipedia.org/wiki/Tire_code

    Starting in 1972 tires were specified by load rating, using a letter code. In practice, a higher load rating tire was also a wider tire. In this system a tire had a letter, optionally followed by "R" for radial tires, followed by the aspect ratio, a dash and the diameter – C78-15 or CR78-15 for bias and radial, respectively. Each diameter of ...

  4. Tyre label - Wikipedia

    en.wikipedia.org/wiki/Tyre_label

    Results of at least three runs of each test are combined to produce the wet grip index, yielding ratings of A - G (although D and G are not used for passenger cars), where A is the best. When buying tyres, it is worth noting that the braking distance (in the wet) from the reference speed of 85 km/h, to a standstill, varies by something of the ...

  5. Low rolling resistance tire - Wikipedia

    en.wikipedia.org/wiki/Low_rolling_resistance_tire

    When measured by using these standard test practices, most new passenger tires have reported RRCs ranging from 0.007 to 0.014. [2] In the case of bicycle tires, values of 0.0025 to 0.005 are achieved. [3] These coefficients are measured on rollers, with power meters on road surfaces, or with coast-down tests.

  6. Federal Motor Vehicle Safety Standards - Wikipedia

    en.wikipedia.org/wiki/Federal_Motor_Vehicle...

    FMVSS No. 129: [33] New non-pneumatic tires for passenger cars- new temporary spare non-pneumatic tires for use on passenger cars; FMVSS No. 131: [34] School bus pedestrian safety devices; FMVSS No. 135: [35] Light vehicle brake systems; FMVSS No. 136: [36] Electronic stability control systems on heavy vehicles; FMVSS No. 138: [37] Tire ...

  7. List of tire companies - Wikipedia

    en.wikipedia.org/wiki/List_of_tire_companies

    Hoosier Racing Tire [39] USA: 1957 Hoosier: Hutchinson SNC [40] France: 1957 Hutchinson Tires Inoue Rubber [41] Japan: 1926 IRC Tires Kelani Tyres Sri Lanka: 1990 CEAT [42] Kenda Rubber [43] Taiwan: 1962 Kenda, Kenda radial Kumho Tires [44] [45] South Korea: 1960 Admiral, Marshal, Kumho, Zetum, Trailfinder [46] Madras Rubber Factory [47] India ...