| 摘要 |
A pneumatic tire capable of improving the wet performance and the low fuel cost performance at a good balance without deteriorating other properties of the tire such as abrasion resistance has a cap tread disposed to the radial outside of a tire and a base tread disposed to the radial inside of a tire in a tread portion, in which the cap tread rubber comprises a rubber compound containing a dienic rubber, and at least 15 parts by weight of modified styrene butadiene rubber and/or modified butadiene rubber modified at a polymer molecule terminal group with at least one functional group in 100 parts by weight of the rubber ingredient and containing 1 to 60 parts by weight of crosslinked rubber particles with an average grain size of 5 to 2,000 nm and a glass transition temperature of −100 to −65° C., and modified with sulfur and a compound having a C═C double bond and having a hydroxyl group based on 100 parts by weight of the rubber ingredient. |
