Most cars, buses, trucks and motorcycles have one thing in common black tyres. But have you ever thought why tyres are almost always black? Interestingly natural rubber is generally light in colour. Tyres are made black mainly because manufacturers add carbon black to the rubber compound.
Why Are Vehicle Tyres Black?
Vehicle tyres are black mainly because of the addition of carbon black to the rubber. Carbon black helps improve the tyre’s strength, durability and resistance to heat and sunlight.
Related Stories
What Is Carbon Black?
Carbon black is a fine form of carbon used in the manufacturing of rubber products including tyres. Its main functions include strengthening the rubber, improving durability and helping tyres manage heat.
Are Tyres Naturally Black?
Rubber itself is not naturally black. Natural rubber is obtained from the latex of rubber producing plants and is generally light or pale in colour. Without additives tyres could have a much lighter appearance.
Why Do Tyres Need to Be Strong?
Tyres experience constant pressure and friction while a vehicle is moving. They must withstand the weight of the vehicle, continuous contact with the road, friction, high temperatures, sudden braking, turning forces and uneven road surfaces.
Why Do Black Tyres Handle Heat Better?
Tyres generate heat while a vehicle is moving. Heat is produced because of friction with the road, flexing of the tyre and high-speed movement. Carbon black helps to improve the tyre compound’s ability to manage heat and reduce heat related damage.
What Other Materials Are Used in Tyres?
Modern tyres are made from more than just rubber. They may include natural rubber, synthetic rubber, carbon black or other reinforcing fillers, steel, textile fibres and chemical compounds.
Tyres
| Feature | Details |
| Natural rubber colour | Generally light or pale |
| Main reason tyres are black | Carbon black is added to the rubber compound |
| Role of carbon black | Reinforces and strengthens rubber |
| Helps improve | Wear resistance and durability |
| Protection | Helps protect against UV-related degradation |
| Tyres made of | Rubber, reinforcing materials, steel, fibres and chemicals |
| Can tyres be coloured? | Yes, but black is most common |