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2. Tire uniformity - Wikipedia

   en.wikipedia.org/wiki/Tire_uniformity

   There are numerous variations and innovations among several tire uniformity machine makers. The standard test speed for tire uniformity machines is 60 r/min of a standard load wheel that approximates 5 miles per hour. High speed uniformity machines are used in research and development environments that reach 250 km/h and higher.

3. List of tire companies - Wikipedia

   en.wikipedia.org/wiki/List_of_tire_companies

   Goodyear (farm tires), Titan, Continental (OTR only) [85] Tigar Tyres Serbia: 1959 Tigar: Tomket Tires [86] [non-primary source needed] Czech Republic: 1997 Tomket (Czech brand of low category is made in China) Toyo Tire & Rubber [87] Japan: 1945 Nitto, Silverstone, Toyo: Trayal Corporation Serbia: 1955 Trayal (farm tires) Triangle Group [88 ...

4. Tire code - Wikipedia

   en.wikipedia.org/wiki/Tire_code

   85 – the load index, a maximum of 515 kg (1,135 lb) per tire in this case; H – the speed index, this means the maximum permitted speed, here 210 km/h (130 mph) The tires on a Hummer H1 might be labeled: 37X12.5R17LT. 37 – the tire is 37 in (940 mm) in diameter; 12.5 – the tire has a cross section of 12.5 in (320 mm)

5. Radial tire - Wikipedia

   en.wikipedia.org/wiki/Radial_tire

   By comparison, radial tires lay all of the cord plies at 90 degrees to the direction of travel (that is, across the tire from lip to lip). This design avoids having the plies rub against each other as the tire flexes, reducing the tire's rolling friction. This allows vehicles with radial tires to achieve better fuel economy than with bias-ply ...

6. Tire manufacturing - Wikipedia

   en.wikipedia.org/wiki/Tire_manufacturing

   The body ply is a calendered [6] sheet consisting of one layer of rubber, one layer of reinforcing fabric, and a second layer of rubber. The earliest textile used was cotton; later materials include rayon, nylon, polyester, and Kevlar. Passenger tires typically have one or two body plies. Body plies give the tire structure strength.

7. Revolutions per minute - Wikipedia

   en.wikipedia.org/wiki/Revolutions_per_minute

   Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or r⋅min −1) is a unit of rotational speed (or rotational frequency) for rotating machines. One revolution per minute is equivalent to ⁠ 1 / 60 ⁠ hertz .