A pneumatic tire comprising: a tread portion provided with a plurality of circumferentially arranged central blocks on both sides of a tire equator wherein the tread portion is further provided with a plurality of circumferentially arranged shoulder blocks that are arranged axially outward of the central blocks on at least one side of the tire equator; each of the central blocks comprising a ground contact surface having an axially outer block edge facing a tread edge (Te) on each side of the tire equator and an outer block sidewall extending radially inwardly from the outer block edge; each outer block edge comprising a first vertex located on the side of the tire equator, a first inclined edge extending axially outwardly from the first vertex and a second inclined edge extending axially outwardly from the first vertex in an opposite inclination direction to the first inclined edge; and each outer block sidewall comprising a middle portion) including the first vertex and a part of the first and second inclined edges (10, 11), and a pair of end portions (17, 17) located on circumferentially both sides of the middle portion, wherein the middle portion is inclined gently with respect to the end portions in relation to an radial direction of the tire, characterized in that the first inclined edge has an average angle (α1) in a range of from 75 to 85 degrees with respect to an axial direction of the tire, and the second inclined edge has an average angle (α2) in a range of from 30 to 50 degrees with respect to the axial direction of the tire; and in that each of the shoulder blocks comprises a ground contact surface having a third vertex located on the side of the tire equator, a fifth inclined edge extending axially outwardly from the third vertex, a sixth inclined edge extending axially outwardly from the third vertex in an opposite inclination direction to the fifth inclined edge and a seventh inclined edge extending axially outwardly from an axially outer end of the sixth inclined edge in the same inclination direction as the fifth inclined edge, wherein the fifth inclined edge has an angle (α6) of from 35 to 45 degrees with respect to the axial direction of the tire, the sixth inclined edge has an angle (α7) of from 55 to 65 degrees with respect to the axial direction of the tire and the seventh inclined edge has an angle (α8) of from 35 to 45 degrees with respect to the axial direction of the tire. a tread portion provided with a plurality of circumferentially arranged central blocks on both sides of a tire equator wherein the tread portion is further provided with a plurality of circumferentially arranged shoulder blocks that are arranged axially outward of the central blocks on at least one side of the tire equator; each of the central blocks comprising a ground contact surface having an axially outer block edge facing a tread edge (Te) on each side of the tire equator and an outer block sidewall extending radially inwardly from the outer block edge; each outer block edge comprising a first vertex located on the side of the tire equator, a first inclined edge extending axially outwardly from the first vertex and a second inclined edge extending axially outwardly from the first vertex in an opposite inclination direction to the first inclined edge; and each outer block sidewall comprising a middle portion) including the first vertex and a part of the first and second inclined edges (10, 11), and a pair of end portions (17, 17) located on circumferentially both sides of the middle portion, wherein the middle portion is inclined gently with respect to the end portions in relation to an radial direction of the tire, characterized in that the first inclined edge has an average angle (α1) in a range of from 75 to 85 degrees with respect to an axial direction of the tire, and the second inclined edge has an average angle (α2) in a range of from 30 to 50 degrees with respect to the axial direction of the tire; and in that each of the shoulder blocks comprises a ground contact surface having a third vertex located on the side of the tire equator, a fifth inclined edge extending axially outwardly from the third vertex, a sixth inclined edge extending axially outwardly from the third vertex in an opposite inclination direction to the fifth inclined edge and a seventh inclined edge extending axially outwardly from an axially outer end of the sixth inclined edge in the same inclination direction as the fifth inclined edge, wherein the fifth inclined edge has an angle (α6) of from 35 to 45 degrees with respect to the axial direction of the tire, the sixth inclined edge has an angle (α7) of from 55 to 65 degrees with respect to the axial direction of the tire and the seventh inclined edge has an angle (α8) of from 35 to 45 degrees with respect to the axial direction of the tire.