Amidst the flurry of vehicles speeding along the highways, the transformation of tyres from their original shouting white hue to the common black always goes unnoticed.
Behind this phenomenal evolution story is a tale of innovation and the quest for optimal performance as humans tried and tested their newfound toy.
In the late 1890s, when automobiles were still in their embryonic stages, white was dominant, let me say, the only colour that defined the tyres. This is due to the natural colour of rubber used in manufacturing, among other materials like zinc oxide.
However, these tyres were not as durable, and manufacturers sought to improve the quality. Initially, soot was used in the rubber mixture to make it black.
With the evolution of the manufacturing process, carbon black was introduced to add more durability to the tyre. According to automobile experts, carbon black has a much higher surface-area-to-volume ratio than soot and boosts the tyre's performance and lifespan.
Currently, it is common practice to use carbon black in the manufacturing of tyres. Although, some classic cars still use white ones.
The striking contrast between the vibrant white tyres and the black asphalt ones is that the latter are easier to clean and are more durable.
Benefits of Carbon Black
Carbon black conducts heat away from the belts and treads of the tyres. This prevents them from overheating, which can be disastrous while on the road.
The material adds abrasive resistance as tyres roll on the road. With this, the wear and tear caused by friction is reduced.
Furthermore, carbon black improves the tensile strength of the tyre. This is the maximum pressure the tyre can withstand before it is stretched and eventually breaks.
It also protects the tyres from harmful ultraviolet (UV) rays and ozone.
According to car experts Motor Biscuit, carbon black makes tyres more electrically conductive. It prevents static charges from building up, which may result in shock.
"It can be difficult to keep dirt and debris from discoloring the white tyres. In contrast, black tyres typically retain their fresh look while they roll along the road," the experts state.
