Pneumatic tire

A pneumatic tire comprising a tread portion provided with:

• at least two circumferentially and continuously extending longitudinal grooves,
• at least one land portion divided between the longitudinal grooves, and
• a first lateral groove and a second lateral groove being provided with the land portion,
• said first and second lateral grooves having one end communicating with one of the longitudinal grooves and the other end extending toward a tire equator,
• said longitudinal groove having a groove wall to which said first and second lateral grooves are connected,
• in a section of the land portion between said first and second lateral grooves adjacent to a circumferential direction of the tire, said groove wall having at least one protruded portion and a dent portion,
• the protruded portion comprising a main surface which extends radially outside from the groove bottom of the longitudinal groove and a slant surface extending from a radially outer edge of the main surface to a ground contact surface of the land portion and having an inclined angle larger than that of the main surface, wherein the main surface of the protruded portion is inclined with respect to the circumferential direction of the tire so as to gradually reduce a width of the longitudinal groove toward the first lateral groove, and wherein the slant surface of the protruded portion has a height in the radial direction of the tire and the height of the slant surface of the protruded portion gradually increases toward the first lateral groove,
• the dent portion comprising a main surface which extends radially outside from the groove bottom of the longitudinal groove, and a slant surface extending from a radially outer edge of the main surface to the ground contact surface of the land portion and having an inclined angle larger than that of the main surface, wherein the main surface of the dent portion extends in parallel with the circumferential direction of the tire.

A pneumatic tire comprising a tread portion provided with:

• at least two circumferentially and continuously extending longitudinal grooves,
• at least one land portion divided between the longitudinal grooves, and
• a first lateral groove and a second lateral groove being provided with the land portion, wherein said first and second lateral grooves have a width of from 1.0 to 2.0 mm and an inclination angle of 30 to 60 degrees with respect to the axial direction of the tire,
• said first and second lateral grooves having one end communicating with one of the longitudinal grooves and the other end extending toward a tire equator,
• said longitudinal groove having a groove wall to which said first and second lateral grooves are connected,
• in a section of the land portion between said first and second lateral grooves adjacent to a circumferential direction of the tire, said groove wall having at least one protruded portion and a dent portion,
• the protruded portion comprising a main surface which extends radially outside from the groove bottom of the longitudinal groove, and a slant surface extending from a radially outer edge of the main surface to a ground contact surface of the land portion and having an inclined angle larger than that of the main surface, wherein the main surface of the protruded portion is inclined with respect to the circumferential direction of the tire so as to gradually reduce a width of the longitudinal groove toward the first lateral groove,
• the dent portion comprising a main surface which extends radially outside from the groove bottom of the longitudinal groove, and a slant surface extending from a radially outer edge of the main surface to the ground contact surface of the land portion and having an inclined angle larger than that of the main surface, wherein the main surface of the dent portion extends in parallel with the circumferential direction of the tire.