| 摘要 |
Provided is a rubber composition for tires that achieves a balanced improvement in wet grip performance, abrasion resistance, and roll processability, and a pneumatic tire formed from the rubber composition. The invention relates to a rubber composition for tires including, per 100 parts by mass of a rubber component, 1-60 parts by mass of an inorganic reinforcing agent having an average particle size of 0.69 µm or less and a nitrogen adsorption specific surface area of 10-50 m 2 /g, the inorganic reinforcing agent being represented by the following formula: kM 1 ·xSiO y ·zH 2 O wherein M 1 represents at least one metal selected from the group consisting of Al, Mg, Ti, Ca, and Zr, or an oxide or hydroxide of the metal; k represents an integer of 1 to 5; x represents an integer of 0 to 10; y represents an integer of 2 to 5; and z represents an integer of 0 to 10. |
