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  2. Michelin PAX System - Wikipedia

    en.wikipedia.org/wiki/Michelin_PAX_System

    The similarly sized PAX tire was designated 245-680R460A, indicating the same 245 mm tread section, but a 680 mm overall diameter (a specification not in the conventional passenger car tire nomenclature), the R, meaning radial construction, a 460 mm wheel seat diameter (approximately 18.1 inches) and A for asymmetric, meaning that the wheel is ...

  3. Tire uniformity - Wikipedia

    en.wikipedia.org/wiki/Tire_uniformity

    Tire uniformity refers to the dynamic mechanical properties of pneumatic tires as strictly defined by a set of measurement standards and test conditions accepted by global tire and car makers. These standards include the parameters of radial force variation , lateral force variation , conicity, ply steer, radial run-out , lateral run-out , and ...

  4. Tire manufacturing - Wikipedia

    en.wikipedia.org/wiki/Tire_manufacturing

    Tire balance measurement is a test where the tire is automatically placed on wheel halves, rotated at a high speed and measured for imbalance. Large commercial truck/bus tires, as well as some passenger and light truck tires, are inspected by X-ray or magnetic induction based inspection machines, that can penetrate the rubber to analyze the ...

  5. Tire code - Wikipedia

    en.wikipedia.org/wiki/Tire_code

    Tire identification labels. Automotive tires are described by several alphanumeric tire codes (in North American English) or tyre codes (in Commonwealth English), which are generally molded into the sidewall of the tire. These codes specify the dimensions of the tire and its key limitations, such as load-bearing ability and maximum speed.

  6. 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 ]

  7. Flat tire - Wikipedia

    en.wikipedia.org/wiki/Flat_tire

    An alternative is a combination patch and plug. This is manufactured with a plug built into it; applying this patch is done similarly except with more steps, including drilling a hole at the puncture so the plug can be pulled through it, as well as cutting off the excess plug from the outside the tire. The final method, the tire plug, can be ...

  8. Wheel sizing - Wikipedia

    en.wikipedia.org/wiki/Wheel_sizing

    Modern road tires have several measurements associated with their size as specified by tire codes like 225/70R14. The first number in the code (e.g., "225") represents the nominal tire width in millimeters. This is followed by the aspect ratio (e.g.,"70"), which is the height of the sidewall expressed as a percentage of the nominal tire width.

  9. Tire load sensitivity - Wikipedia

    en.wikipedia.org/wiki/Tire_load_sensitivity

    Tire load sensitivity describes the behaviour of tires under load. Conventional pneumatic tires do not behave as classical friction theory would suggest. The load sensitivity of most real tires in their typical operating range is such that the coefficient of friction decreases as the vertical load, Fz, increases.