To provide a method for producing an unvulcanized rubbeer composition for tire, improved in the processability during the process ranging from compounding to vulcanization.

The method for producing the unvulcanized rubber composition for a tire is provided, wherein the composition comprises 100 pts.wt. of a rubber component comprising one or more diene rubbers selected from natural rubber and synthetic polyisoprene rubber, 5-30 pts.wt. of silica, 3-15 wt.%, based on the whole amount of the silica, of a silane coupling agent, 0.1-5.0 pt.wt. of a quinone-based radical scavenger, and a vulcanization-based compounding agent. Specifically, this method comprises the first blending step of forming a first blend by blending together at 110-160C 50 pts.wt. or more of the whole amount of the rubber component, the whole amount of the silica, the whole amount of the silane coupling agent and the whole amount of the quinone-based radical scavenger, the second blending step of forming a second blend by blending at 130-160C by adding the balance of the rubber component to the first blend, and the third blending step of blending by adding the vulcanization-based compounding agent to the second blend.