Abstract: The pneumatic tire 1 satisfies both SW?175 mm and OD/SW?3.6, where SW is the width of the pneumatic tire 1 and OD is the outer diameter of the pneumatic tire 1. Moreover, the pneumatic tire 1 satisfies both SW?175 mm and OD/RD?1.4, where SW is the width, OD is the outer diameter, and RD is the inner diameter of the pneumatic tire 1, which is the diameter of a portion of the pneumatic tire 1 (an end portion of a bead portion) in contact with a wheel in a state where the pneumatic tire 1 is fitted to the wheel.

Abstract: At least one of land portion sections 14, 15, 16 that are formed in a tread surface portion 10a is constituted by a first land portion 17 and a second land portion 18 being alternately and consecutively arranged along the tire circumference direction R, and a first top surface portion 17a and a first inclined surface portion 17b whose recess amount inward in a radial direction of the tire gradually increases in accordance with heading from the first top surface portion 17a toward the outer side in a width direction of the tire H are provided in a first land portion 17, and a second top surface portion 18a and a second inclined surface portion 18b whose recess amount inward in the radial direction of the tire gradually increases in accordance with heading from the second top surface portion 18a toward the inner side in the width direction of the tire H are provided in a second land portion 18, and by the first inclined surface portion 17b and the second inclined surface portion 18b mutually overlapping in the

Abstract: A pneumatic tire (1010) has a circumferential groove (1020) that extends in the tire circumferential direction (Tc), and a land part (1040) that is adjacent to the circumferential groove (1020) and extends in the tire circumferential direction (Tc). Formed in the circumferential groove (1020) is an inner groove (1110) on the bottom (1020b) of the circumferential groove (1020) and recessed more in the tire radial inward direction than the bottom (1020b). The inner groove (1110) includes an inclined part (1120) that extends so as to be inclined in the tire circumferential direction (Tc). The land part (1040) has a hook-like groove portion (1210) formed along the direction (A11) in which the inclined part (1120) extends. The extension direction ends (1210a, 1210b) of the hook-like groove portion (1210) end within the land part.

Abstract: An intra-groove groove 310,330 is formed in circumferential groove 31,33 which is formed in a pneumatic tire 1, the intra-groove groove 310,330 is recessed farther inward in a tire radial direction TR than the circumferential groove 31,33. The intra-groove groove 310,330 includes a high-angle groove section 311,331 in which an angle ?1 formed between a straight line L1 and the intra-groove groove 310,330 is equal to or more than a predetermined angle, and a low-angle groove section 312,332 in which an angle ?2 formed between the straight line L1 and the intra-groove groove 310,330 is smaller than the predetermined angle. The high-angle groove section 311,331 is positioned closer to an intra-groove center line DCL than the low-angle groove section 312,332. A width W1 of the high-angle groove section 311, 331 is wider than a width W2 of the low-angle groove section 312, 332.

Abstract: Provision of a pneumatic tire with further enhanced low noise performance during running. Plural land portion rows are formed in a tread section (16) by forming circumferential direction main groove(s) extending along the tire circumferential direction. A fine-grooved-and-siped rib (34) configuring one of the land portion rows is configured with a fine groove (36) extending along the tire circumferential direction, a projecting sipe (38) projecting out from the fine groove (36) towards the side of a tire equatorial plane (CL) and open to a circumferential direction main groove (22E); and a plain rib portion (40) adjacent to the fine groove (36) on the vehicle mounting outside (SE), the plain rib portion (40) configured with a circular shaped peripheral face across the entire face on a ground contact side.

Abstract: A pneumatic tire, while achieving excellent drainage performance by projections and depressions formed in a circumferential groove, can reduce road noise by making the circumferential stiffness of a land portion uniform even in the presence of such projections and depressions. A plurality of protuberances are arranged in at least one circumferential groove at intervals in the tread circumferential direction, the protuberances being raised from the inner surface of the circumferential groove and extending from the groove bottom of the circumferential groove to at least one groove wall surface in the tread width direction. A plurality of sipes are arranged in a land portion adjacent to the groove wall surface of the circumferential groove to which the protuberances extend, the sipes being open to the circumferential groove in areas where the respective protuberances are arranged.

Abstract: A tire includes a circumferential direction main groove on a tread surface, first and second circumferential supplemental grooves located on both sides of the circumferential direction main groove, and first and second central land portions formed between the circumferential direction main groove and the first and second circumferential direction supplemental grooves. The first and second central land portions have plural width direction sipes, respectively, and each of the width direction sipes extends to the circumferential main groove, the circumferential main groove has shallow grooved portions and deep grooved portions. The deep grooved portions are deeper than the shallow grooved portions, and the shallow grooved portions are shallower than the circumferential supplemental grooves.

Abstract: A tire 1 comprises rib-shaped land portions 20 extending in a tire circumferential direction TC and has a circumferential groove 30 adjacent to the land portions 20 and extending in the tire circumferential direction TC. Tread contact surfaces 10 of the land portions 20 form smooth surfaces with no gap when a normal load is applied and the tread contact surfaces are in contact with a road surface. The circumferential groove 30 includes a shallow groove portion 40 extending in the tread-width direction TW, and a deep groove portion 50 adjacent to the shallow groove portion 40 in the tire circumferential direction and extending in the tread-width direction. A deep groove portion 50 is recessed more inwardly in a tire radial direction TR than the shallow groove portion 40 with a groove bottom 40c of the shallow groove portion 40 being an upper end of the deep groove portion 50.

Abstract: A pneumatic radial tire in which a plurality of land portion rows 2 are formed by a plurality of main grooves that extend in the circumferential direction on a tread portion of a tire, and a thin groove 3 that extends in the tire circumferential direction is formed in at least one shoulder land portion row 2A that is positioned on the tread end among the plurality of land portion rows. A land portion 5 that is positioned between, the thin groove 3 and the tread end 4 is partitioned into a plurality of blocks 5a by a lug groove 6 that extends in the tire width direction and whose maximum groove depth is set deeper than the groove depth of the thin groove, and the groove depth of the lug groove continuously changes so as to become a maximum at an intermediate position between the thin groove and the tread end. According to the present invention, it is possible to provide a pneumatic radial tire that can achieve improved drainage performance.

Abstract: In a tire 1, a central land portion row 20C and intermediate land portion rows 20M are formed by center-side main grooves 10C. A projecting portion 50 projecting outwardly in a tire radial direction TR from a groove bottom surface 11 of the center-side main groove 10C is provided in the central groove 10C. The projecting portion 50 is located on an extension line L1 extending in an extending direction of lug grooves 30M, and extends outwardly in the tread width direction TW from a sidewall 21 of the central land portion row 20C. An inner end height H1 of the projecting portion 50 located on an innermost side thereof in the tread width direction TW and continuous to the central land portion row 20C is greater than an outer end height H2 of the projecting portion 50 located on an outermost side thereof in the tread width direction TW.

Abstract: A tire provided with a plurality of land portions formed by a main groove extending along a tire circumferential direction, wherein the main groove is formed with one intra-groove recessed in a tire inner direction from a surface of the main groove, the intra-groove comprises: a first circumferential groove portion extending along the tire circumferential direction on the first groove wall; a first inclined portion extending from the first groove wall toward the second groove wall on a groove bottom of the main groove; a second circumferential groove portion extending along the tire circumferential direction on the second groove wall; and a second inclined portion extending from the second groove wall toward the first groove wall on the groove bottom of the main groove.

Abstract: A pneumatic tire (1) comprises a tread (50), side walls (60), and buttress portions (70). In a cross-section of the pneumatic tire (1) in the tread width direction (TW), if the point at which a first curved line (R1) which follows the curvature of the surface of the tread (50) and a second curved line (R2) which follows the curvature of the surface of a buttress portion (70) intersect is defined as an imaginary point (IP) and also if the point at which a straight line (L) passing through the imaginary point (IP) and substantially perpendicular to the carcass (20) intersects the surface of the pneumatic tire (1) is defined as an intersection point (NP), the pneumatic tire (1) has a recessed shoulder region (US) including the intersection point (NP) and having a predetermined width. The recessed shoulder region (US) is provided with recesses (80) recessed from the surface of the pneumatic tire (1) and also with a surface portion (90) in which no recess (80) is formed.

Abstract: A pneumatic tire is provided that has enhanced traction performance. A shoulder main body portion of a first shoulder block is formed with a step portion projecting out in a tire circumferential direction. A height of the step portion is set lower than a height of a tread face of the shoulder main body portion and higher than the height of a lug groove. The step portion extends from a tire equatorial plane side end portion of the shoulder main body portion, beyond a tire width direction ground contact edge, to a tire shoulder portion.

Abstract: A tyre wherein a first bulge part and a second bulge part are formed in a circumferential direction groove. The first bulge part has a narrow-tip shape such that, in the tyre tread plan view, the size in the tread width direction diminishes along a first direction in the tyre circumferential direction. The second bulge part has a narrow-tip shape such that, in the tyre tread plan view, the size in the tread width direction diminishes along a second direction opposite to the first direction in the tyre circumferential direction. A plurality of first bulge parts and second bulge parts are provided at predetermined intervals in the tyre circumferential direction. A groove part which extends in the tyre circumferential direction is provided between the first bulge part and the second bulge part which opposes the first bulge part in the tread width direction.