A pneumatic tyre comprising: a tread portion having a first tread edge (Ti, To), and a first buttress portion (4A, 4B) extending inwardly in a tyre radial direction from the first tread edge (Ti, To), wherein the first buttress portion (4A, 4B) is provided with a plurality of protectors protruding outwardly in a tyre axial direction, the plurality of protectors comprises a set of protectors comprising a first protector and a second protector arranged adjacent to the first protector via a groove extending in the tyre radial direction, each of the first protector and the second protector comprising an inner portion and an outer portion located outwardly in the tyre radial direction of the inner portion, a maximum length (Wa) in a tyre circumferential direction of the inner portion being greater than a maximum length (Wb) in the tyre circumferential direction of the outer portion, the groove is provided with a tie-bar connecting the first protector and the second protector, the tie-bar is partially formed in a tyre radial region of the groove, and the tie-bar has a protruding height that is smaller than a protruding height (h1a) of the first protector and a protruding height (h2a) of the second protector, characterized in that, in a front view of each protector (11, 12) of the first buttress portion (4A, 4B), the first protector has an L-shape in which the inner portion thereof protrudes from the outer portion thereof to an opposite side of the groove in the tyre circumferential direction, and the second protector has an inverted L-shape in which the inner portion thereof protrudes from the outer portion thereof to an opposite side of the groove in the tyre circumferential direction. a tread portion having a first tread edge (Ti, To), and a first buttress portion (4A, 4B) extending inwardly in a tyre radial direction from the first tread edge (Ti, To), wherein the first buttress portion (4A, 4B) is provided with a plurality of protectors protruding outwardly in a tyre axial direction, the plurality of protectors comprises a set of protectors comprising a first protector and a second protector arranged adjacent to the first protector via a groove extending in the tyre radial direction, each of the first protector and the second protector comprising an inner portion and an outer portion located outwardly in the tyre radial direction of the inner portion, a maximum length (Wa) in a tyre circumferential direction of the inner portion being greater than a maximum length (Wb) in the tyre circumferential direction of the outer portion, the groove is provided with a tie-bar connecting the first protector and the second protector, the tie-bar is partially formed in a tyre radial region of the groove, and the tie-bar has a protruding height that is smaller than a protruding height (h1a) of the first protector and a protruding height (h2a) of the second protector, characterized in that, in a front view of each protector (11, 12) of the first buttress portion (4A, 4B), the first protector has an L-shape in which the inner portion thereof protrudes from the outer portion thereof to an opposite side of the groove in the tyre circumferential direction, and the second protector has an inverted L-shape in which the inner portion thereof protrudes from the outer portion thereof to an opposite side of the groove in the tyre circumferential direction.