Abstract: A pneumatic tire 1 comprises a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tire radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tire 1 further comprises a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tire axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tire axial direction of the belt layer 7, and a water absorption rate of the noise damper 20 is in a range of from 10% to 25%.

Abstract: A pneumatic tire 1 comprises a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tire radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tire 1 further comprises a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tire axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tire axial direction of the belt layer 7, and a water absorption rate of the noise damper 20 is in a range of from 10% to 25%.

Abstract: A pneumatic tire 1 comprises a carcass 6 extending between a pair of bead portions 4, 4, an inner liner 10 arranged on an inner side in a tire radial direction of the carcass 6 and forming a tire inner cavity surface 16, and a noise damper 20 made of a porous material and fixed to the tire inner cavity surface 16 of the inner liner 10. A glass transition temperature Tg1 of the noise damper 20 is lower than a glass transition temperature Tg2 of the inner liner 10.

Abstract: The present invention provides a rubber composition for tires which is excellent in performance on ice, and a pneumatic tire formed from the rubber composition. Included is a rubber composition for tires, containing: a rubber component; a farnesene polymer; and a carbon black having a cetyltrimethylammonium bromide adsorption specific surface area of 140 m2/g or more and a ratio (CTAB/IA) of the cetyltrimethylammonium bromide adsorption specific surface area (CTAB) to an iodine adsorption number (IA) of 1.10 or higher.

Abstract: [ solution] A pneumatic tire 1 comprises a carcass 6 extending between a pair of bead portions 4, 4, an inner liner 10 arranged on an inner side in a tire radial direction of the carcass 6 and forming a tire inner cavity surface 16, and a noise damper 20 made of a porous material and fixed to the tire inner cavity surface 16 of the inner liner 10. A glass transition temperature Tg1 of the noise damper 20 is lower than a glass transition temperature Tg2 of the inner liner 10.

Abstract: The present invention provides: a rubber composition for a tire that achieves both good fuel economy and abrasion resistance, and also achieves good degradation resistance and processability; and a heavy-load tire having a tread produced therefrom. The present invention relates to a rubber composition for a tire, comprising a rubber component that contains a modified natural rubber having a phosphorus content of 200 ppm or less and a butadiene rubber, wherein the amount of the modified natural rubber is 60 to 95% by mass and the amount of the butadiene rubber is 5 to 40% by mass, based on 100% by mass of the rubber component.

Abstract: The present invention provides: a rubber composition for a tire that achieves both good fuel economy and abrasion resistance, and also achieves good degradation resistance and processability; and a heavy-load tire having a tread produced therefrom. The present invention relates to a rubber composition for a tire, comprising a rubber component that contains a modified natural rubber having a phosphorus content of 200 ppm or less and a butadiene rubber, wherein the amount of the modified natural rubber is 60 to 95% by mass and the amount of the butadiene rubber is 5 to 40% by mass, based on 100% by mass of the rubber component.

Abstract: Abrasion resistance can be improved without impairing tip cut resistance by using polybutadiene comprising specific syndiotactic-1,2-polybutadiene in a tread rubber. Namely, the present invention provides a rubber composition for a tread which comprises a rubber component comprising 10 to 30% by weight of a butadiene rubber in which syndiotactic-1,2-polybutadiene having an average primary particle diameter of not more than 100 nm is dispersed in the butadiene rubber.