In tire production It contains many parts. From
1. NR
2. synthetic rubber Which is made from petroleum This prevents the soft tires when faced with hot weather
3. Carbon black or carbon to rubber molecules tightly packed resistant to wear and abrasion
4. Burlap or wire reinforced steel helps provide strength
five. Zinc oxide To help slow the beetles degrade UV radiation
6. Sulfides making flexible rubber stable block
7. Other chemicals, copper, lead, zinc, cadmium, whether as mercury and other heavy metals. High carbon compounds Fodor