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2. List of tire companies - Wikipedia

   en.wikipedia.org/wiki/List_of_tire_companies

   Titan Tire Corporation [79] USA: 1993 Goodyear (farm tires), Titan, Continental (OTR only) [80] Tigar Tyres Serbia: 1959 Tigar: Tomket Tires [81] [non-primary source needed] Czech Republic: 1997 Tomket (Czech brand of low category is made in China) Toyo Tire & Rubber [82] Japan: 1945 Nitto, Silverstone, Toyo: Trayal Corporation Serbia: 1955 ...

3. International roughness index - Wikipedia

   en.wikipedia.org/wiki/International_roughness_index

   [19] for the lane. There are two ways this can be done. A 'half-car' (HRI) model simulates the vehicle travelling along both wheelpaths, while a 'quarter car' model simulates one wheel on each wheelpath and the average is the lane IRI. The quarter-car approach is considered more accurate in representing the motion felt by users and is most common.

4. Tire code - Wikipedia

   en.wikipedia.org/wiki/Tire_code

   Prior to 1964, tires were all made to a 90% aspect ratio. Tire size was specified as the tire width in inches and the diameter in inches – for example, 6.50-15. [29] From 1965 to the early 1970s, tires were made to an 80% aspect ratio. Tire size was again specified by width in inches and diameter in inches.

5. 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 ...

6. Rut (roads) - Wikipedia

   en.wikipedia.org/wiki/Rut_(roads)

   In modern roads the main cause is heavily loaded trucks. These heavy loaded trucks imprint their tire impressions on roads over time, causing ruts. Rut is a common pavement distress and is often used in pavement performance modeling. [1] Ruts prevent rainwater from flowing to the side of the road into ditches or gutters.

7. 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 ]

8. NASCAR rules and regulations - Wikipedia

   en.wikipedia.org/wiki/NASCAR_rules_and_regulations

   Penalties will be a 10-40 point deduction, suspension for 1-3 races, plus a fine up to $75,000. L2 penalties involve more egregious infractions concerning tampering with the three "no man's land" technical areas of tires, engine and fuel, as well as single-supplier parts for Cup's Next Gen car. Major safety violations, the use of telemetry or ...

9. Tire tread - Wikipedia

   en.wikipedia.org/wiki/Tire_tread

   Studded mountain bike tires for icy conditions. Off-road tires used in mud or dirt feature individual knob patterns to allow the tire to bite into the surface and lever the sides of the tread to get a better grip. Given the smaller contact patch, these tires tend to wear quickly when used on asphalt (depending on type of rubber).