Tires are made from around 100 different kinds of material. Of this number, the four main petroleum materials are synthetic rubber, carbon black as a filler, mineral oil and synthetic fiber for the casing. The Dunlop ENASAVE ES801 tire reduces the use of synthetic rubber by increasing natural rubber, and utilizes natural materials for filler, oil and casing. This has successfully raised the proportion of non-petroleum materials from 44% for our conventional tires, to 70% for the ENASAVE ES801. The increased use of these materials has also lowered rolling resistance by 30%, contributing to improved fuel consumption.