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Dunlop Tyres is a brand of tyres which is managed by different companies around the world. It was founded by pneumatic tyre pioneer John Boyd Dunlop in Belfast, Ireland, in 1888. [5] The brand is operated by Goodyear [1] in North America (passenger car & light truck), Europe, Australia and New Zealand. [6]
In 1958, Dunlop introduced its R5 racing tyre, replacing the cotton fabric of the earlier R1 to R4 tyres with nylon fabric, allowing for a reported 12 lb reduction in tyre weight. [3] During the 1960s, Dunlop introduced improved nylon casings, reduced aspect ratio, significantly increased tyre width, and the use of synthetic rubber.
Dunlop is a brand of tyre originally produced by the Dunlop Pneumatic Tyre Company from the end of the 19th century, taking its name from John Boyd Dunlop. The brand is used for many other products made from rubber or with rubber components and some with a looser connection to rubber.
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.
Originally introduced in early 1968 as the Roadmaster K81 rear tyre [6] by Dunlop Rubber Co. Ltd, [7] the tyre was renamed "TT100" because it was the first production tyre to reach a lap speed of 100 mph over the Isle of Man TT race course when Malcolm Uphill rode his works Thruxton Bonneville to victory in 1969 with a fastest lap of 100.37 mph during the 750 cc class production race.
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