A tyre comprising: a tread portion having a ground contact surface, the tread portion comprising a crown land portion located nearest to a tyre equator, a middle land portion adjacent to the crown land portion, a crown circumferential groove between the crown land portion and the middle land portion, and a shoulder circumferential groove located outwardly in a tyre axial direction of the middle land portion, the crown land portion being divided into a plurality of crown blocks by a plurality of crown lateral grooves extending across the crown land portion, the middle land portion being divided into a plurality of middle blocks by a plurality of middle lateral grooves extending across the middle land portion, the tread portion being provided with a plurality of grooved sipes opening to the ground contact surface and extending in a tyre axial direction, wherein the plurality of grooved sipes comprises a first grooved sipe and a second grooved sipe, the first grooved sipe comprises a first sipe portion and a first widening groove portion connected to an inner side of the first sipe portion in a tyre radial direction and having a greater width than that of the first sipe portion, the second grooved sipe comprises a second sipe portion and a second widening groove portion connected to an inner side of the second sipe portion in the tyre radial direction and having a greater width than that of the second sipe portion, and a distance h1 in the tyre radial direction from the ground contact surface to an outer end of the first widening groove portion is different from a distance h2 in the tyre radial direction from the ground contact surface to an outer end of the second widening groove portion, characterized in that each crown block is provided with a single first grooved sipe, i.e. each crown block is provided with a grooved sipe only and said grooved sipe is a first grooved sipe, and each middle block is provided with a single second grooved sipe, i.e. each middle block is provided with a grooved sipe only and said grooved sipe is a second grooved sipe. a tread portion having a ground contact surface, the tread portion comprising a crown land portion located nearest to a tyre equator, a middle land portion adjacent to the crown land portion, a crown circumferential groove between the crown land portion and the middle land portion, and a shoulder circumferential groove located outwardly in a tyre axial direction of the middle land portion, the crown land portion being divided into a plurality of crown blocks by a plurality of crown lateral grooves extending across the crown land portion, the middle land portion being divided into a plurality of middle blocks by a plurality of middle lateral grooves extending across the middle land portion, the tread portion being provided with a plurality of grooved sipes opening to the ground contact surface and extending in a tyre axial direction, wherein the plurality of grooved sipes comprises a first grooved sipe and a second grooved sipe, the first grooved sipe comprises a first sipe portion and a first widening groove portion connected to an inner side of the first sipe portion in a tyre radial direction and having a greater width than that of the first sipe portion, the second grooved sipe comprises a second sipe portion and a second widening groove portion connected to an inner side of the second sipe portion in the tyre radial direction and having a greater width than that of the second sipe portion, and a distance h1 in the tyre radial direction from the ground contact surface to an outer end of the first widening groove portion is different from a distance h2 in the tyre radial direction from the ground contact surface to an outer end of the second widening groove portion, characterized in that each crown block is provided with a single first grooved sipe, i.e. each crown block is provided with a grooved sipe only and said grooved sipe is a first grooved sipe, and each middle block is provided with a single second grooved sipe, i.e. each middle block is provided with a grooved sipe only and said grooved sipe is a second grooved sipe.