As far as I know, the first tires are not black. The first rubber tire was invented in 1895 and in fact it was white
The pure vulcanized rubber is soft and abrasives very quickly. When it be loaded, it is heated and deformed by heat. Therefore, it is necessary to be mix to ensure the hardness as well as the high temperature, previously used additives are zinc oxide.
Inventors have come up with a solution to this problem called the "competitive absorber." This substance will convert ultraviolet light into heat and disperse into the environment. This invention was immediately applied to tire manufacturing technology, the absorber used in conjunction with black carbon powder. This powder is smooth, odourless and produced by decomposition of natural gas or kerosene. Main ingredients are natural or artificial rubber. Carbon protect tires from abrasiving, ultraviolet rays help rubber do not crack and increase the time to use up to 5 times. That is also the reason why black tires.
After period of time the tires will turn gray because the absorbers will suffer from corrosion instead when exposed by ultraviolet light and ozone to tire aging and discoloration. In order to increase the tolerance of the tire, manufacturers also add a wax compound that makes the tire elastic when moving, creating a protective layer between the air and the tire polymer, also known as the process "blooming". That is why today's tires are always black, besides black also helps the car look strong, suitable for all colors and not cling dust as the other colors.
