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  2. MOT test - Wikipedia

    en.wikipedia.org/wiki/MOT_test

    The MOT test (or simply MOT) is an annual test of vehicle safety, roadworthiness aspects and exhaust emissions required in the United Kingdom for most vehicles over three years old. In Northern Ireland the equivalent requirement applies after four years. [ 1 ]

  3. 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 ]

  4. Tyre label - Wikipedia

    en.wikipedia.org/wiki/Tyre_label

    For passenger and light truck tyres, the manufacturers or importers have the choice of either putting a sticker on the tyre tread or a label accompanying each delivery of batch of tyres to the dealer and to the end consumer. The tyre label will use a classification from the best (green category "A") to the worst performance (red category "G").

  5. Transportation Recall Enhancement, Accountability and ...

    en.wikipedia.org/wiki/Transportation_Recall...

    The Transportation Recall Enhancement, Accountability and Documentation or TREAD Act (Pub. L. 106–414 (text)) is a United States federal law enacted in the fall of 2000. This law intended to increase consumer safety through mandates assigned to the National Highway Traffic Safety Administration (NHTSA).

  6. Tire tread - Wikipedia

    en.wikipedia.org/wiki/Tire_tread

    Design of tire tread has an effect upon noise generated, especially at freeway speeds. [1] Generally there is a tradeoff of tread friction capability; deeper patterns often enhance safety, but simpler designs are less costly to produce and actually may afford some roadway noise mitigation.

  7. Vehicle inspection - Wikipedia

    en.wikipedia.org/wiki/Vehicle_inspection

    The MOT test (from Ministry of Transport, the former name of the Department for Transport) is a mandatory annual test of safety, road worthiness and exhaust emissions for vehicles over three years old. It is enforced by linking the official MOT database to the payment of Vehicle Excise Duty tax. Prior to November 2014 a tax disc had to be ...

  8. Bar grip - Wikipedia

    en.wikipedia.org/wiki/Bar_grip

    The first deliberate uses of bar grip tyres as off-road tyres, were developed pre-war as truck tyres particularly for army use. They used crosswise tread bars for grip, arranged in a helical pattern. [4] A helical pattern was used to avoid the uneven rolling radius and vibration of a tread with simple crosswise bars and large gaps between.

  9. Contact patch - Wikipedia

    en.wikipedia.org/wiki/Contact_patch

    Colorized tire footprint pressure distribution. The contact patch is the portion of a vehicle's tire that is in actual contact with the road surface.It is commonly used in the discussion of pneumatic (i.e. pressurized) tires, where the term is used strictly to describe the portion of the tire's tread that touches the road surface.