Abstract: A method executed by a computer, including: executing multiple times a first process of outputting question information to a user and acquiring response information from the user; executing a second process at least once while executing the first process multiple times; executing a third process of estimating a vehicle use and customer value for the user and specifying one or more tire products to recommend to the user based on two or more pieces of the response information acquired; and outputting information indicating the vehicle use and the customer value estimated and information regarding the one or more tire products specified. The second process includes determining a comprehension level of the user regarding a tire product, based on one or more pieces of the response information acquired, and determining question information to be output next time and thereafter, according to the comprehension level determined.

Abstract: The bead portion of the tire has an inner bead provided inside the tire width direction of a carcass ply and an outer bead provided outside the tire width direction of the carcass ply. The inner bead and the outer bead have a bead core portion including a bead cord formed of a metal material, and a filler portion provided outside the tire radial direction of the bead core portion and formed of a resin material. The inner bead and the outer bead sandwich a carcass ply.

Abstract: The bead portion of the pneumatic tire includes a bead structure having a bead core composed of a bead cord, and an annular plate which extends to the tire circumferential direction and is formed of a resin material. The annular plate has a planar first annular ring portion extending to the tire circumferential direction and a second annular ring portion positioned outside the tire radial direction of the first annular portion and extending to the tire circumferential direction, the first annular portion is provided along the bead structure, and the second annular portion is further inclined to the outside in tire width direction of the first annular portion.

Abstract: A pneumatic tire including: a tread portion is in contact with a road surface; and a side wall portion is continuous to the tread portion and positioned inside a tire radial direction of the tread portion. A large region including a plurality of small regions having different arithmetic average roughness outside in a tire width direction is formed on outer surface of the side wall portion. A plurality of large regions are formed along a tire circumferential direction and the tire radial direction. In a boundary line of adjacent large region, small regions having different arithmetic average roughness come into contact with each other.

Abstract: A tire includes: circumferential grooves along a circumferential direction of a tire; lateral grooves along the circumferential direction, each lateral groove having one end opened to a side of the tire and the other end communicated with the circumferential groove; and narrow grooves in blocks defined by the circumferential and lateral grooves, each narrow groove having one end opened to the side of the tire and the other end communicated with the circumferential groove. The tire includes a surface that projects, at a position more to one side or the other in the circumferential direction than the narrow groove that is opened to the tire side, further to an outer side in a tire width direction than a tire side shape to which the narrow groove is opened, and the surface extends in a radial direction from a ground contact end to include a groove bottom of the narrow groove.

Abstract: In an elastic crawler with core metals having a configuration in which rollers arranged along a ground roll on a top surface of a guide protrusion, roller disengagement preventing protrusions respectively protrude in opposite directions of a crawler circumferential direction from a pair of guide protrusion bases of a core metal main body; the roller disengagement preventing protrusions protruding in the crawler circumferential direction to protrude to each other toward opposed core metal main bodies of adjacent core metals mesh each other in a crawler width direction; and ribs are formed that connect the roller disengagement preventing protrusions on a side of a core metal blade part among the roller disengagement preventing protrusions meshing each other in the crawler width direction and core metal blade parts.

Abstract: A tire state estimation system (10) is provided with a crack shape acquisition unit (240) for acquiring the shape of a crack on the outer surface of a tire, a crack information DB (230) for holding a correspondence relationship in which at least either degree of opening or deviation width of the crack based on the shape of the crack is associated with the depth of the crack, and a crack depth estimation unit (250) for estimating the depth of the crack based on the acquired crack shape and the correspondence relationship.

Abstract: Provided is an adhesive composition for organic fibers that has low burden on the environment, has good operability, and can improve the adhesion between an organic fiber and a coated rubber composition. The adhesive composition for organic fibers contains (A) rubber latex having unsaturated diene, (B) polypeptide, and at least one compound selected from the group consisting of (C) an aqueous compound having a (thermal dissociative blocked) isocyanate group, (D) an epoxide compound, and (E) polyphenol, where no resorcin is contained.

Abstract: A pneumatic tire that includes a tread surface 1 including: two or more main grooves 3; and a pair of middle block rows 22, wherein one or more first middle blocks in the plurality of middle blocks each have a middle block inclined side wall surface 223 that faces an outer main groove in the pair of outer main grooves and that gradually inclines inwards in a tire radial direction as the middle block inclined side wall surface extends outwards in the tire width direction, and the middle block inclined side wall surface forms an acute angle ?223 of 30° to 50° with respect to a normal of the tread surface at an inner end in the tire width direction of the middle block inclined side wall surface.

Abstract: A pneumatic tire including a center block row 21 provided in a center area of a tread surface 1, wherein the center block row includes a plurality of center blocks 210 arranged along a tire circumferential direction, the plurality of center blocks includes a plurality of first center blocks 211 and a plurality of second center blocks 212, the plurality of first center blocks and the plurality of second center blocks have polygonal shapes on the tread surface, the polygonal shape formed by each second center block has a same number of sides as, but a different shape than, the polygonal shape formed by each first center block, each first center block and each second center block has one or more sipes, and a number n of sipes included in each second center block is greater than a number m of sipes included in each first center block.

Abstract: A tire wear prediction system (100) is provided with a wear prediction unit (110) for predicting a wear state of a tire mounted at a predetermined wheel position of a vehicle based on the traveling state of the vehicle, a change history acquisition unit (120) for acquiring a change history including the rotation of the wheel position on which the tire is mounted or a content of replacement with another tire, and a wear state correction unit (140) for correcting a reference of the wear state of the tire predicted by the wear prediction unit (110) based on the change history. The wear prediction unit (110) predicts the wear state of the tire based on the reference of the wear state corrected by the wear state correction unit (140).

Abstract: Provided is a tire including, in a surface of a tread of the tire, a land portion row in which four land portions are arranged in parallel in a width direction of the tread, in a land portion on one end side of the land portion row, a recess that opens in a circumferential groove on an adjacent land portion side, and an intermittent sipe extending in an orientation intersecting the width direction of the tread, intermittently by being interrupted by the circumferential groove, from a position of a start end corresponding to the recess, across three land portions of the four land portions excluding the land portion on the one end side, wherein the intermittent sipe opens in a surface of each of the three land portions via an inclined surface from the surface of each of the three land portions toward the intermittent sipe.

Abstract: Provided herein are organic solvent-based processes for the removal of rubber from non-Hevea plants such as guayule shrubs. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).

Abstract: A tire noise testing method, a vehicle and a control device that are efficient in an actual vehicle noise test. The method of the invention is conducted while a vehicle is driven automatically. The method includes a step of operating a control unit when the vehicle reaches a predetermined position or reaches a predetermined speed, for putting the vehicle into coast-traveling with a prime mover of the vehicle in a non-driving state. The method further includes a step of operating a measuring unit for measuring the tire noise of the vehicle during the coast-traveling of the vehicle.

Abstract: A tire includes a sipe, on a surface of a tread of a tire, extending across a tire equator from one side to another side of the tire equator. An end of the sipe on at least the one side is located at a tread edge or near the tread edge, and an inclination angle of the sipe relative to a width direction of the tread decreases from the tire equator towards the tread edge.

Abstract: Provided is a technology for inhibiting the occurrence of uneven wear at shoulder-side edges of blocks in a motorcycle tire having a block pattern. A motorcycle tire (100) includes plural blocks (11) and (12) that are arranged on a tread ground-contact surface. In a tire widthwise cross-section of a tread portion (1), when regions obtained by bisecting a tread half-width region measured along the tire surface from a tire equator CL to a tread ground-contact end TE are each defined as a tread center portion Tc and a tread shoulder portion Ts, a middle block (12) among the plural blocks, whose outer wall surface (12A) on the tire width-direction outer side is positioned in the tread shoulder portion Ts, is configured such that an upper end portion is chamfered only for the outer wall surface (12A) and a chamfered part (12B) is thereby formed on the middle block (12).

Abstract: A metal-rubber composite, comprising a metal and a rubber of which at least a portion is adhered to the metal, the composite is characterized in that: a ratio (C1/C2) of the total concentration (C1) of at least one metal element selected from the group consisting of bismuth, copper, antimony, silver, niobium, molybdenum, zirconium, and nickel in a region within 100 nm measured from an adhesion interface of the metal and the rubber toward the rubber side, with respect to the total concentration (C2) of at least one metal element selected from the group consisting of bismuth, copper, antimony, silver, niobium, molybdenum, zirconium, and nickel in a region between the 100 nm depth and the 200 nm depth, measured from the adhesion interface toward the rubber side, is 7.0 or larger.

Abstract: A control device for a vehicle comprises: a communication section configured to receive first information from a sensor installed at a tire, and receive second information from a sensor installed at a vehicle body; and a controller configured to estimate a wheel load from the first information, estimate a vehicle weight from the second information, and control the vehicle based on one of the wheel load and the vehicle weight.

Abstract: In regions, divided by the tire equator, on both sides of the tread surface of a tire, the tire includes a grip area along the entire circumference of the tread, the grip area including a plurality of recessed lines, with a shape recessed toward an inner side of the tire from the outline of the tread surface, that extend from the tread edge side in a direction inclined relative to the tire equator and are arrayed in parallel, and a plurality of sipes that extend toward the tire equator in a direction inclined relative to the tire equator, starting in the grip area and terminating before the tire equator. The negative ratio in the grip area is higher than the negative ratio closer to the tire equator than the grip area.