Rubber Composition in Vehicle Tires

Vehicle tire rubber composition primarily consists of natural and synthetic rubbers blended with fillers, chemicals, and reinforcements for durability, grip, and flexibility. This mixture forms the core of tires, enabling them to withstand road stresses.

Main Rubber Components
Tires use about 40-45% rubber by weight, split between natural rubber (from trees, around 24% in passenger tires) and synthetic rubber (like styrene-butadiene, about 19%). Carbon black (23-27%) acts as a key filler to boost wear resistance and give the black color, while silica improves wet traction.

Key Additives
Sulfur (about 1%) enables vulcanization, creating cross-links for elasticity and strength. Other elements include zinc oxide, aromatic oils, resins, and plasticizers (around 8-10% total) for processing and aging resistance

Tire Structure
Rubber compounds differ by section: tread uses high synthetic rubber for grip, sidewalls need flexibility, and inner liners focus on air retention. Over 200 raw materials go into modern tires.

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