Natural rubber provides specific performance characteristics to tires. It is especially good for tear and fatigue crack resistance.The two main synthetic rubber polymers used in tire manufacturing are butadiene rubber and styrene butadiene rubber. These rubber polymers are used in combination with natural rubber. Physical and chemical properties of these rubber polymers determine the performance of each component in the tire as well as the overall tire performance.
Plasticisers are needed to ensure that the tyre gives you a positive and safe feeling while driving, even in snow and rain. These oils and resins make the tyre flexible and improve the grip of the material. For you, the driver, this means that plasticisers improve rolling resistance. Oils also add to the slip resistance of the tyre.