A tyre comprising: a tread portion comprising: axially spaced first and second tread edges (T1, T2) that are axially outermost edges of a ground contacting patch of the tyre which occurs under a condition such that a 70% standard tyre load is applied to the tyre placed under a normal state, wherein the normal state is such that the tyre is mounted onto a standard wheel rim and inflated to a standard pressure; a first shoulder land portion including the first tread edge (T1); and a first shoulder circumferential groove located inwardly in a tyre axial direction of and adjacent to the first shoulder land portion and extending continuously in a tyre circumferential direction, wherein the first shoulder land portion is provided with a plurality of first shoulder lateral grooves extending from the first shoulder circumferential groove across the first tread edge (T1), each of the plurality of first shoulder lateral grooves has a pair of first groove walls , and the pair of first groove walls is provided with a pair of first chamfer portions that extends from the first shoulder circumferential groove to a first location beyond the first tread edge (T1), and characterized in that the pair of first chamfer portions has a chamfer width reducing outwardly in the tyre axial direction, and the pair of first chamfer portions terminates at the first location, the first shoulder lateral grooves comprising a pair of non-chamfered groove edges that extends outwardly in the tyre axial direction from the first location of the pair of first groove walls . a tread portion comprising: axially spaced first and second tread edges (T1, T2) that are axially outermost edges of a ground contacting patch of the tyre which occurs under a condition such that a 70% standard tyre load is applied to the tyre placed under a normal state, wherein the normal state is such that the tyre is mounted onto a standard wheel rim and inflated to a standard pressure; a first shoulder land portion including the first tread edge (T1); and a first shoulder circumferential groove located inwardly in a tyre axial direction of and adjacent to the first shoulder land portion and extending continuously in a tyre circumferential direction, axially spaced first and second tread edges (T1, T2) that are axially outermost edges of a ground contacting patch of the tyre which occurs under a condition such that a 70% standard tyre load is applied to the tyre placed under a normal state, wherein the normal state is such that the tyre is mounted onto a standard wheel rim and inflated to a standard pressure; a first shoulder land portion including the first tread edge (T1); and a first shoulder circumferential groove located inwardly in a tyre axial direction of and adjacent to the first shoulder land portion and extending continuously in a tyre circumferential direction, wherein the first shoulder land portion is provided with a plurality of first shoulder lateral grooves extending from the first shoulder circumferential groove across the first tread edge (T1), each of the plurality of first shoulder lateral grooves has a pair of first groove walls , and the pair of first groove walls is provided with a pair of first chamfer portions that extends from the first shoulder circumferential groove to a first location beyond the first tread edge (T1), and characterized in that the pair of first chamfer portions has a chamfer width reducing outwardly in the tyre axial direction, and the pair of first chamfer portions terminates at the first location, the first shoulder lateral grooves comprising a pair of non-chamfered groove edges that extends outwardly in the tyre axial direction from the first location of the pair of first groove walls . <EOS>