A pneumatic tire comprising a tread portion comprising a tread rubber having a rubber hardness of less than 60 degrees, wherein the rubber hardness is measured at 23 degrees C in accordance with the Japanese Industrial Standard K 6253, and wherein the tread portion comprises: a pair of shoulder circumferential grooves extending in the tire circumferential direction; a pair of shoulder land portions defined as being located axially outside the respective shoulder circumferential grooves; and one or more crown land portions defined as being located between the shoulder circumferential grooves, each of the shoulder land portions is circumferentially divided into a plurality of shoulder blocks by a plurality of shoulder lateral-groove-like tread-pattern elements having a depth of not less than 50% of the depths of the shoulder circumferential grooves, and at least one of the crown land regions is circumferentially divided into a plurality of crown blocks by a plurality of crown lateral-groove-like tread-pattern elements having a depth of not less than 50% of the depths of the shoulder circumferential grooves, wherein a shoulder lateral-groove-like tread-pattern element is a groove, a sipe, or a composite of a groove and a sipe which extends across the entire axial width of the shoulder land region and a crown lateral-groove-like tread-pattern element is a groove, a sipe, or a composite of a groove and a sipe which extends across the entire axial width of the crown land region, and wherein when a block area per unit depth of a block is defined as a ground contact area of the block divided by a maximum depth of lateral-groove-like tread-pattern elements which divide the block, the block area per unit depth (As) of each of the shoulder blocks is smaller than the block area per unit depth (Ac) of each of the crown blocks, wherein the maximum depth of lateral-groove-like tread-pattern elements is measured under a normal state of the tire in which the tire is mounted on a regular rim and is inflated to a normal internal pressure and loaded with no tire load, and the ground contact area of the block is measured when the tire under the normal state is contacted with a flat horizontal surface at a camber angle of zero degree and loaded with the normal tire load, characterized in that the shoulder lateral-groove-like tread-pattern elements are chamfered, wherein the width (w) and the depth (d) of the chamfer of the shoulder lateral-groove-like tread-pattern elements are in a range from 2 to 5 mm. the tread portion comprises: a pair of shoulder circumferential grooves extending in the tire circumferential direction; a pair of shoulder land portions defined as being located axially outside the respective shoulder circumferential grooves; and one or more crown land portions defined as being located between the shoulder circumferential grooves, a pair of shoulder circumferential grooves extending in the tire circumferential direction; a pair of shoulder land portions defined as being located axially outside the respective shoulder circumferential grooves; and one or more crown land portions defined as being located between the shoulder circumferential grooves, each of the shoulder land portions is circumferentially divided into a plurality of shoulder blocks by a plurality of shoulder lateral-groove-like tread-pattern elements having a depth of not less than 50% of the depths of the shoulder circumferential grooves, and at least one of the crown land regions is circumferentially divided into a plurality of crown blocks by a plurality of crown lateral-groove-like tread-pattern elements having a depth of not less than 50% of the depths of the shoulder circumferential grooves, wherein a shoulder lateral-groove-like tread-pattern element is a groove, a sipe, or a composite of a groove and a sipe which extends across the entire axial width of the shoulder land region and a crown lateral-groove-like tread-pattern element is a groove, a sipe, or a composite of a groove and a sipe which extends across the entire axial width of the crown land region, and wherein when a block area per unit depth of a block is defined as a ground contact area of the block divided by a maximum depth of lateral-groove-like tread-pattern elements which divide the block, the block area per unit depth (As) of each of the shoulder blocks is smaller than the block area per unit depth (Ac) of each of the crown blocks, wherein the maximum depth of lateral-groove-like tread-pattern elements is measured under a normal state of the tire in which the tire is mounted on a regular rim and is inflated to a normal internal pressure and loaded with no tire load, and the ground contact area of the block is measured when the tire under the normal state is contacted with a flat horizontal surface at a camber angle of zero degree and loaded with the normal tire load, characterized in that the shoulder lateral-groove-like tread-pattern elements are chamfered, wherein the width (w) and the depth (d) of the chamfer of the shoulder lateral-groove-like tread-pattern elements are in a range from 2 to 5 mm.