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  2. 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.

  3. 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 ]

  4. 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.

  5. 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").

  6. 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 ...

  7. Tire code - Wikipedia

    en.wikipedia.org/wiki/Tire_code

    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.

  8. 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.

  9. Off-road tire - Wikipedia

    en.wikipedia.org/wiki/Off-road_tire

    Most modern cars, SUV and pickup trucks require minimum tyre speed rating of "S" (180kph), but the vast majority of mud-terrain tyres max out at a tyre speed rating of "Q" (160kph). [ 8 ] [ 9 ] [ 10 ] Mud-terrain tyres, may improve traction and have reduced braking distances on dirt roads where the rocks slightly are too big to fit into the ...