Abstract: Provided is a rubber composition being excellent in cut resistance while maintaining good elongation fatigue resistance. The rubber composition of the present disclosure contains a rubber component containing 70% by mass or more of natural rubber, a filler containing at least silica, and a cyclic polyol compound having a hydrocarbyl group of 0.1 parts by mass to 2 parts by mass with respect to 100 parts by mass of the natural rubber in the rubber component.

Abstract: A method for tread selection to select a tread to attach to a tread side of a tire casing when manufacturing a tire includes the steps of: a) measuring, by a tire condition measurement unit, at least one characteristic value indicating at least one of a tire condition and a vehicle running condition; b) predicting, by a casing life prediction unit, a remaining life of the tire casing based on the at least one characteristic value measured in step a); c) selecting, by a tread selection unit, at least one recommended tread in accordance with the remaining life of the tire casing predicted in step b) from among a plurality of treads attachable to the tire casing, using wear life information calculated in advance for each of the treads; and d) displaying, by a terminal, the at least one recommended tread selected in step c).

Abstract: A system for predicting tire casing life remaining for a casing in a tire, the system including: a tire condition measurement unit that measures one characteristic value including tire internal pressure information indicating at least one of a tire condition and a vehicle running condition; a temperature history estimation unit that estimates a temperature history of at least one location in at least one casing structural member based on the characteristic value; a member physical property calculation unit that calculates at least one current physical property value of the at least one casing structural member that degrades due to tire internal air temperature based on at least the tire internal pressure information and the temperature history; and a remaining drivable distance prediction unit that predicts a drivable distance of the tire until the current physical property value reaches a physical property value limit set in advance.

Abstract: In a tire for a heavy load in which a belt is formed by laminating rubber-coated cord layers prepared by embedding steel cords in a coating rubber, an end part of at least one rubber-coated cord layer or an end part of the belt is coated with a rubber composition containing trans-polybutadiene (TRBR) and bismaleimide (BMI) in the following compounding amounts based on 100 parts by mass of a rubber component containing natural rubber and isoprene rubber: 0.1 part by mass?TRBR+BMI?10.0 parts by mass TRBR/(TRBR+BMI)?25% whereby cracks originating from separation between the steel cords at an end part of the belt and the coating rubber are prevented from being generated.

Abstract: A method for tread selection to select a tread to attach to a tread side of a tire casing when manufacturing a tire includes the steps of: a) measuring, by a tire condition measurement unit, at least one characteristic value indicating at least one of a tire condition and a vehicle running condition; b) predicting, by a casing life prediction unit, a remaining life of the tire casing based on the at least one characteristic value measured in step a); c) selecting, by a tread selection unit, at least one recommended tread in accordance with the remaining life of the tire casing predicted in step b) from among a plurality of treads attachable to the tire casing, using wear life information calculated in advance for each of the treads; and d) displaying, by a terminal, the at least one recommended tread selected in step c).

Abstract: A system for predicting tire casing life remaining for a casing in a tire, the system including: a tire condition measurement unit that measures one characteristic value including tire internal pressure information indicating at least one of a tire condition and a vehicle running condition; a temperature history estimation unit that estimates a temperature history of at least one location in at least one casing structural member based on the characteristic value; a member physical property calculation unit that calculates at least one current physical property value of the at least one casing structural member that degrades due to tire internal air temperature based on at least the tire internal pressure information and the temperature history; and a remaining drivable distance prediction unit that predicts a drivable distance of the tire until the current physical property value reaches a physical property value limit set in advance.

Abstract: The present invention is concerned with a tire including a tire casing having a rolling resistance coefficient according to the coastdown method of JIS D4234 of not exceeding 4.0, in which both low rolling resistance and durability of the tire can be made compatible with each other.

Abstract: The present invention provides a method for producing a tire casing and a tire having improved low-heat-generation property and durability.

Abstract: The present invention is a method for producing a tire casing by vulcanizing a casing portion comprising a belt portion composed of multiple belt layers, a side portion and a bead portion, and the method includes at least one method selected from the following (a) and (b). The invention also provides a production method for a tire casing and a tire having improved low-heat-generation property and durability. Method (a) in which a rubber composition containing carbon black having a nitrogen adsorption specific surface area of from 38 to 99 m2/g as defined in JIS K 6217-2:2001, in an amount of from 40 to 60 parts by mass relative to 100 parts by mass of the rubber component therein is used as the belt wedge rubber of the belt portion.

Abstract: In a tire for a heavy load in which a belt is formed by laminating rubber-coated cord layers prepared by embedding steel cords in a coating rubber, an end part of at least one rubber-coated cord layer or an end part of the belt is coated with a rubber composition containing trans-polybutadiene (TRBR) and bismaleimide (BMI) in the following compounding amounts based on 100 parts by mass of a rubber component containing natural rubber and isoprene rubber: 0.1 part by mass?TRBR+BMI?0.0 parts by mass TRBR/(TRBR+BMI)?25% whereby cracks originating from separation between the steel cords at an end part of the belt and the coating rubber are prevented from being generated.