2006-12-25 14:46:07 · 4 answers · asked by achal d 1 in Social Science ➔ Economics
A tire or tyre (see spelling differences and etymological origins) is a device covering the circumference of a wheel. It is an essential part of most ground vehicles and is used to dampen the oscillations caused by irregularities in the road surface, to protect the wheel from wear and tear as well as to provide a high-friction bond between the vehicle and the ground to improve acceleration and handling.
Today most tires, especially those fitted to motor vehicles, are manufactured from synthetic rubber, but other materials such as steel may be used.
In 1844, Charles Goodyear invented vulcanization, the process that would later be used to produce cured rubber tires. In 1845 the first pneumatic (inflatable) tire was patented by fellow Scotsman, the engineer Robert William Thomson, born in Stonehaven, Scotland, as the "Aerial Wheel". This invention consisted of a canvas inner tube surrounded by a leather outer tire.
John Dunlop re-invented the tire for his ten year old son's tricycle in 1887 and was awarded a patent for his tire in 1888 (rescinded 1890). Dunlop's tire had a modified leather hosepipe as an inner tube and rubber treads. By Dunlop's time, the bicycle had been fully developed (see Rover) and it proved a far more suitable application for pneumatic tires. Pneumatic tires were first installed on aircraft in 1906.
2006-12-25 18:38:30 · answer #1 · answered by Roja 5 · 0⤊ 0⤋
it is NOT rubber it is plastic made from oil each car tire contains a avg of 1 qt. while a truck tire will contain at least a gal. this is why tires are so hard to put out when a pile starts to burn they will also,give off about 10% more energy in the form of heat when burned than coal does
2006-12-25 15:01:01 · answer #2 · answered by Anonymous · 0⤊ 0⤋
a number of that's laid down or "caught" to the line. have you ever observed whilst using on a easy colored rode (like concrete) you will discover darker paths the place all of the tires have long gone? a number of that's became to airborne dirt and dust, settles on or close to the line and get's washed away whilst it rains. in case you skid or peel out, a number of it turns to smoke and is going into the ambience. And something is going to three unknown place that's the same unknown place the place all of the worldwide's lacking pens are...
2016-12-15 08:02:41 · answer #3 · answered by ? 4 · 0⤊ 0⤋
tires are made with nylon now , rubber is no longer used
2006-12-25 14:59:31 · answer #4 · answered by xjoizey 7 · 0⤊ 1⤋