1.2 Billion vehicles are running on the road in this world. Every Vehicle has unique features but the colour of the tyre in each & every vehicle is the same i.e Black only. Not only in your country but also in every part of the world, the tyres are always black.
Vehicle tyres are made up of natural rubber but the colour of natural rubber is white. It becomes black in addition of Carbon. Carbon is added to provide more strength and durability to the tyres. Normal rubber tyre can work upto 10,000 km while tyre with carbon can work upto 1 Lakh km. The chemical process is known as vulcanization in which carbon and sulphur is added to natural rubber to make it more durable.