A tyre comprising: a tread portion being provided with at least one circumferential groove extending continuously in a tyre circumferential direction and at least one lateral groove extending in a tyre axial direction, the at least one lateral groove comprising a connected portion connected to the at least one circumferential groove, the at least one circumferential groove comprising a groove bottom, the groove bottom being provided with a plurality of groove bottom protruding portions protruding outwardly in a tyre radial direction, each of the plurality of groove bottom protruding portions comprising a first surface portion extending in the tyre radial direction and facing a first circumferential direction, and a second surface portion arranged on a second circumferential direction opposite to the first circumferential direction and extending at a larger angle with respect to the tyre radial direction than that of the first surface portion, wherein in a tread plan view, at least a part of the plurality of groove bottom protruding portions is located in a lateral-groove extended region in which the connected portion is extended into the at least one circumferential groove along the tyre axial direction, and the groove bottom is provided with flat portions between the plurality of groove bottom protruding portions, and the flat portions extend parallel to a ground contacting surface of the tread portion. characterized in that the plurality of groove bottom protruding portions comprises a plurality of first groove bottom protruding portions located on a first side in a groove width direction of the at least one circumferential groove, and a plurality of second groove bottom protruding portions located on a second side opposite to the first side in the groove width direction of the at least one circumferential groove, wherein the second surface portions of the plurality of first groove bottom protruding portions are inclined in an opposite direction to the second surface portions of the plurality of second groove bottom protruding portions. a tread portion being provided with at least one circumferential groove extending continuously in a tyre circumferential direction and at least one lateral groove extending in a tyre axial direction, the at least one lateral groove comprising a connected portion connected to the at least one circumferential groove, the at least one circumferential groove comprising a groove bottom, the groove bottom being provided with a plurality of groove bottom protruding portions protruding outwardly in a tyre radial direction, each of the plurality of groove bottom protruding portions comprising a first surface portion extending in the tyre radial direction and facing a first circumferential direction, and a second surface portion arranged on a second circumferential direction opposite to the first circumferential direction and extending at a larger angle with respect to the tyre radial direction than that of the first surface portion, wherein in a tread plan view, at least a part of the plurality of groove bottom protruding portions is located in a lateral-groove extended region in which the connected portion is extended into the at least one circumferential groove along the tyre axial direction, and a first surface portion extending in the tyre radial direction and facing a first circumferential direction, and a second surface portion arranged on a second circumferential direction opposite to the first circumferential direction and extending at a larger angle with respect to the tyre radial direction than that of the first surface portion, wherein in a tread plan view, at least a part of the plurality of groove bottom protruding portions is located in a lateral-groove extended region in which the connected portion is extended into the at least one circumferential groove along the tyre axial direction, and the groove bottom is provided with flat portions between the plurality of groove bottom protruding portions, and the flat portions extend parallel to a ground contacting surface of the tread portion. characterized in that the plurality of groove bottom protruding portions comprises a plurality of first groove bottom protruding portions located on a first side in a groove width direction of the at least one circumferential groove, and a plurality of second groove bottom protruding portions located on a second side opposite to the first side in the groove width direction of the at least one circumferential groove, wherein the second surface portions of the plurality of first groove bottom protruding portions are inclined in an opposite direction to the second surface portions of the plurality of second groove bottom protruding portions.