The present invention provides a rubber composition that is used for manufacturing a rubber excellent in weather resistance, fracture resistance and crack growth resistance, and that contains a conjugated diene compound/non-conjugated olefin copolymer, a conjugate diene-based polymer and a non-conjugated diene compound/non-conjugated olefin copolymer, a rubber composition for tire side use using the rubber composition for tire sidewall members, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire. The rubber composition includes: (A) a conjugated diene compound/non-conjugated olefin copolymer containing a conjugated diene compound-derived unit by at least 40 mol %; (B) a conjugated diene-based polymer; and (C) a non-conjugated diene compound/non-conjugated olefin copolymer containing an ethylene-propylene-diene rubber.
                            本发明提供了一种橡胶组合物,用于制造具有耐候性、抗断裂性和裂纹生长抗性的橡胶,并包含共轭二烯化合物/非共轭烯烃共聚物、共轭二烯基聚合物和非共轭二烯化合物/非共轭烯烃共聚物,用于轮胎侧壁成员的轮胎侧壁使用的橡胶组合物,通过交联橡胶组合物获得的交联橡胶组合物和轮胎。该橡胶组合物包括:(A)含有至少40摩尔%共轭二烯化合物衍生单元的共轭二烯化合物/非共轭烯烃共聚物;(B)共轭二烯基聚合物;和(C)含有
乙烯-
丙烯-二烯基橡胶的非共轭二烯化合物/非共轭烯烃共聚物。