Abstract: A tire comprising a tread, the tread comprising at least one rubber layer of a rubber composition comprising a rubber component, a filler, and a silane coupling agent, wherein a ratio (G/WL) of a tire weight G (kg) with respect to a maximum load capability WL (kg) of the tire is 0.0150 or less, and, where Wt (mm) is the tire cross-sectional width and Dt (mm) is the tire outer diameter, Wt and Dt satisfy the following Mathematical expression (1), and an average value of tan ? at 15° C. to 30° C. of the rubber composition, which average value is measured under conditions of a frequency of 10 Hz, an initial strain of 10%, and an amplitude of ±0.5%, is 0.

Abstract: An anomaly determining device includes a sensor information acquirer and a determiner. The sensor information acquirer acquires sensor information output in time sequence from each of two sensors that detect different physical quantities of a moving part that is subjected to positioning control. The determiner determines, when the moving part is located within a predetermined range from a target position for positioning, the presence or absence of an anomaly in at least one of the two sensors in accordance with the acquired sensor information and outputting a result of the determination.

Abstract: A tire in which an elongation at break and/or compounding of a rubber composition of a tread.

Abstract: Provided are tires that are excellent in tire properties such as fuel economy, abrasion resistance, wet grip performance, snow and ice performance, fracture resistance, and flex crack growth resistance. Included is a tire containing a rubber composition containing a natural rubber derived from Taraxacum kok-saghyz having a weight average molecular weight (Mw) of 5,000,000 or more and including polymers having a radius of gyration (Rz) of 130 nm or larger, wherein the Mw and Rz values are measured by FFF-MALS.

Abstract: A tire in which an elongation at break and/or compounding of a rubber composition of a tread.

Abstract: Provided are a tread rubber composition that provides a balanced improvement of fuel economy, fracture strength, and abrasion resistance, and a pneumatic tire including the rubber composition. The present invention relates to a tread rubber composition including: a rubber component; a silica having a nitrogen adsorption specific surface area of 220 m2/g or more; and a mercapto silane coupling agent, the tread rubber composition satisfying the following relationship (A): (A)G*(4%)?G*(64%)?150[kPa] wherein G*(4%) is the shear modulus at an applied strain of 4% at 100° C., and G*(64%) is the shear modulus at an applied strain of 64% at 100° C.

Abstract: Provided are tires that are excellent in tire properties such as fuel economy, abrasion resistance, wet grip performance, snow and ice performance, fracture resistance, and flex crack growth resistance. Included is a tire containing a rubber composition containing a natural rubber derived from Taraxacum kok-saghyz having a weight average molecular weight (Mw) of 5,000,000 or more and including polymers having a radius of gyration (Rz) of 130 nm or larger, wherein the Mw and Rz values are measured by FFF-MALS.

Abstract: A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire characterized by initiating kneading of a rubber component and a compound of the formula (1) before kneading the rubber component and a silane coupling agent having a mercapto group. (Wherein R1 represents a straight-chain or branched chain alkyl group having 1 to 18 carbon atoms or a cycloalkyl group having 3 to 12 carbon atoms, and R2 and R3 together with nitrogen bonded thereto form a succinimide group, a maleimide group or a phthalimide group.

Abstract: To be capable of preventing deterioration of uniformity after puncture repair while suppressing running noise. [Solution] A pneumatic tire 1 comprises a noise damper 20 fixed to a tire inner cavity surface of a tread portion 2 and formed of a porous material. The noise damper 20 includes a first part 23 arranged on an outer side in a tire radial direction and fixed to the tire inner cavity surface 16, and a second part 24 arranged on an inner side in the tire radial direction of the first part 23 and exposed in a tire inner cavity 17. A water absorption rate of the first part 23 calculated by a following formula (1) is in a range of from 5% to 25%. Air permeability of the second part 24 measured in accordance with Japanese Industrial standard JIS-L1096 is in a range of from 1 to 7 cm3/cm2/s. The formula (1) is: water absorption rate (%)=weight change before and after immersion (g)/volume at 50% compression (cm3)×100 (1).

Abstract: To be capable of preventing deterioration of uniformity after puncture repair while suppressing running noise. [Solution] A pneumatic tire 1 comprises a noise damper 20 fixed to a tire inner cavity surface of a tread portion 2 and formed of a porous material. The noise damper 20 includes a first part 23 arranged on an outer side in a tire radial direction and fixed to the tire inner cavity surface 16, and a second part 24 arranged on an inner side in the tire radial direction of the first part 23 and exposed in a tire inner cavity 17. A water absorption rate of the first part 23 calculated by a following formula (1) is in a range of from 5% to 25%. Air permeability of the second part 24 measured in accordance with Japanese Industrial Standard JIS-L1096 is in a range of from 1 to 7 cm3/cm2/s. The formula (1) is: water absorption rate (%)=weight change before and after immersion (g)/volume at 50% compression (cm3)×100 ??(1).

Abstract: A pneumatic tire 1 includes 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 the tread portion 2. The pneumatic tire 1 has a noise damper 20 arranged on an inner cavity surface of the tread portion 2. Glass transition temperature of the noise damper 20 is in a range of from ?55 degrees Celsius to ?45 degrees Celsius.

Abstract: Provided are a tread rubber composition that provides a balanced improvement of fuel economy, fracture strength, and abrasion resistance, and a pneumatic tire including the rubber composition. The present invention relates to a tread rubber composition including: a rubber component; a silica having a nitrogen adsorption specific surface area of 220 m2/g or more; and a mercapto silane coupling agent, the tread rubber composition satisfying the following relationship (A): (A) G*(4%)?G*(64%)?150 [kPa] wherein G*(4%) is the shear modulus at an applied strain of 4% at 100° C., and G*(64%) is the shear modulus at an applied strain of 64% at 100° C.

Abstract: A pneumatic tire 1 includes 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 the tread portion 2. The pneumatic tire 1 has a noise damper 20 arranged on an inner cavity surface of the tread portion 2. Glass transition temperature of the noise damper 20 is in a range of from ?55 degrees Celsius to ?45 degrees Celsius.

Abstract: A pneumatic tire having excellent high-temperature grip performance and abrasion resistance is provided. The pneumatic tire is a tire having a tread composed of a predetermined rubber composition comprising a diene rubber comprising isoprene rubber, carbon black, silica, a compound comprising a predetermined bonding unit I and a bonding unit II, and a compound represented by a predetermined formula.

Abstract: A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire is characterized by initiating kneading of a rubber component and a specific polysulfide compound before kneading the rubber component and a silane coupling agent having a mercapto group.

Abstract: A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire is characterized by initiating kneading of a rubber component and a compound represented by the following formula (1) before kneading the rubber component and a silane coupling agent having a mercapto group. (Wherein each of R1 to R4 independently represents a straight-chain or branched chain alkyl group having 1 to 18 carbon atoms or a cycloalkyl group having 5 to 12 carbon atoms.

Abstract: The present invention provides a pneumatic tire provided with a tread formed from a rubber composition that can achieve balanced improvements in fuel economy and wet-grip performance. The present invention relates to a pneumatic tire provided with a tread formed from a rubber composition, the rubber composition containing a rubber component, silica, and a specific silane coupling agent, the rubber component containing, based on 100% by mass of the rubber component, not less than 5% by mass of a conjugated diene polymer containing a constituent unit based on a conjugated diene and a specific constituent unit, at least one terminal of the polymer being modified with a specific compound, the rubber composition containing the silica in an amount of 5 to 150 parts by mass relative to 100 parts by mass of the rubber component.

Abstract: A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire is characterized by initiating kneading of a rubber component and a specific polysulfide compound before kneading the rubber component and a silane coupling agent having a mercapto group.

Abstract: A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire characterized by initiating kneading of a rubber component and a compound of the formula (1) before kneading the rubber component and a silane coupling agent having a mercapto group. (Wherein R1 represents a straight-chain or branched chain alkyl group having 1 to 18 carbon atoms or a cycloalkyl group having 3 to 12 carbon atoms, and R2 and R3 together with nitrogen bonded thereto form a succinimide group, a maleimide group or a phthalimide group.

Abstract: A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire is characterized by initiating kneading of a rubber component and a compound represented by the following formula (1) before kneading the rubber component and a silane coupling agent having a mercapto group. (Wherein each of R1 to R4 independently represents a straight-chain or branched chain alkyl group having 1 to 18 carbon atoms or a cycloalkyl group having 5 to 12 carbon atoms.