Why are tires black?

Tires are something black, round, and incomprehensible to many. But it wasn't always that way. They were incomprehensible and round in the old days, but not black. What gives tires their familiar black color?

The addition of soot has forever painted tires black. Previously, tires were beige, closer to white, not only due to the natural color of rubber and other components, but also because of the addition of zinc to the rubber mixture, which increased strength. But since zinc was also needed for the military industry, it was constantly in short supply. Carbon black or technical carbon began to be added to extend the life of tires, as it is an effective protection against ultraviolet rays. In addition, the high content of carbon black in tires led to an increase in strength and durability. Consequently, it is not surprising that the transition to black color occurred almost instantly. The benefits of a black tire were obvious.

Ultraviolet radiation is extremely destructive to the sensitive rubber compound of a tire. This is worth remembering for car owners who store tires under the direct influence of sunlight. This inevitably leads to premature aging of the tires and their failure.