TIRE
FIG2 is an enlarged view of a first shoulder land portion and a first middle land portion shown in FIG1
FIG2 is an enlarged view of the first shoulder land portion 6A and the first middle land portion 7A. As shown in FIG2, the first shoulder land portion 6A has a buttress surface 9A that is continuous outward of the first tread end Tel in the tire axial direction. The buttress surface 9A is tilted in the tire axially outward direction toward the tire radially inner side, and is continuous with the sidewall portion. As shown in FIG2, for example, the second sipe 12 preferably reaches the center position of the first shoulder land portion 6A in the tire axial direction. The aforementioned center position is the center position in the tire axial direction on the tread surface from the first tread end Tel to the first shoulder main groove 4A. In a preferable mode, a length L4 of the second sipe 12 in the tire axial direction is, for example, 0.55 to 0.65 times the width W2 of the first shoulder land portion 6A in the tire axial direction. The second sipe 12 having such a structure allows steering stability to be improved while noise performance is maintained. As shown in FIG2, the first shoulder land portion 6A preferably has a longitudinal narrow groove 15 that extends in the tire circumferential direction in a portion outward of the first tread end Tel in the tire axial direction. In the present embodiment, for example, the longitudinal narrow groove 15 extends linearly so as to be parallel to the tire circumferential direction. The longitudinal narrow groove 15 having such a structure contributes to improvement of anti-wandering performance. As shown in FIG2, for example, the second middle sipe 27 reaches the center position of the first middle land portion 7A in the tire axial direction, and ends in a portion that is closer to the first tread end Tel than the center position is. The second middle sipe 27 ends, for example, in a portion that is closer to the tire equator C than the end of the middle lateral groove 20 is. Specifically, for example, a length L8 of the second middle sipe 27 in the tire axial direction is preferably 0.60 to 0.80 times the width W3 of the first middle land portion 7A in the tire axial direction.
enlarged view
17
second longitudinal narrow groove
12
second sipe second sipes
11
first sipe first sipes
2
tread portion
20
middle lateral groove middle lateral grooves
16
first longitudinal narrow groove
27
second middle sipe
10
shoulder lateral groove shoulder lateral grooves
26
first middle sipe first middle sipes
15
longitudinal narrow groove
['1. A tire (1) comprising a tread portion (2), wherein the tread portion (2) includes a first shoulder main groove (4A) that extends near a first tread end (Tel) continuously in a tire circumferential direction, and a first shoulder land portion (6A) that is defined between the first shoulder main groove (4A) and the first tread end (Tel), the first shoulder land portion (6A) includes a shoulder lateral groove (10) that extends at least from the first tread end (Tel) toward the first shoulder main groove (4A), and ends in the first shoulder land portion (6A), a first sipe (11) that extends, from an end of the shoulder lateral groove (10) at which the shoulder lateral groove (10) ends, to the first shoulder main groove (4A), and a second sipe (12) that extends at least from the first tread end (Te1) toward the first shoulder main groove (4A), and ends in the first shoulder land portion (6A), said tire being  characterized in that  a length (L3) of the shoulder lateral groove (10) in a tire axial direction is 0.10 to 0.30 times a width (W2) of the first shoulder land portion (6A) in the tire axial direction and the tread end is defined to be the end in the tire axial direction of a ground contact portion of the tread portion in a normal running state where a normal load is applied to the tire, having a camber angle of 0° and the tire is mounted to a normal rim and inflated to a normal internal pressure.', '5. The tire (1) according to any one of claims 1 to 4, wherein the first shoulder land portion (6A) has a longitudinal narrow groove (15) that extends in the tire circumferential direction in a portion outward of the first tread end (Te1) in the tire axial direction.', '10. The tire (1) according to claim 8 or 9, wherein the first middle land portion (7A) has a middle lateral groove (20) that extends from the first shoulder main groove (4A) and ends in the first middle land portion (7A), and the middle sipe (25) includes a first middle sipe (26) that connects with an end of the middle lateral groove (20) at which the middle lateral groove (20) ends.']