The effect of the silica on the properties of SIBR compound by substituting for the same level of carbon black was investigated.The results showed that the abrasion resistance of SIBR vulcani zate improved by substituting the silica for the partial or whole carbon black,and at the same time,tanδ at 0 ℃ increased and tanδ at 60 ℃ decreased.A SIBR tread with better processibility,physical properties,abrasion resistance and wet traction as well as lower rolling resistance was obtained by using 20~30 phr silica...