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Cold inflation pressure is a gauge pressure and not an absolute pressure. This article focuses on cold inflation pressures for passenger vehicles and trucks. The general principles are, of course, applicable to bicycle tires, tractor tires, and any other kind of tire with an internal structure that gives it a defined size and shape (as opposed ...
The first Bridgestone tire was produced on 9 April 1930, by the Japanese "Tabi" Socks Tire Division (actually made jika-tabi). One year later on 1 March 1931, the founder, Shojiro Ishibashi, made the "Tabi" Socks Tire Division independent and established the Bridgestone Tire Co., Ltd. [9] in the city of Kurume
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. [24] 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.
The problem with this method was that if tires all lost the same pressure then none would show up against the others to indicate a problem. However, research has shown that both direct and indirect tire pressure monitoring systems are equally effective. [1] Tire-pressure gauges measure air pressure using various methods:
Nokian Tyres' three principal activities are the manufacture of passenger car tyres, heavy commercial tyres, and retail tyre sales. [24] As of 2008, Nokian is the most profitable tyre manufacturer in the world, [25] [26] at up to 18% earnings (before taxes and interest) relative to sales, compared to 14% at Bridgestone, 8% at Michelin, and 9.6% at Continental.
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 ...
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 ]
Winter tire, showing tread pattern designed to compact snow in the gaps. [1] Snow tires, also known as winter tires, are tires designed for use on snow and ice. Snow tires have a tread design with larger gaps than those on conventional tires, increasing traction on snow and ice. Such tires that have passed specific winter traction performance ...