| 摘要 |
A pneumatic tire capable of improving driving stability on a dry road surface, while suppressing reduction in driving stability on a wet road surface has the following structure. In an outer region of a tread surface (1), a circumferential-direction main groove (2A) and a circumferential-direction narrow groove (3) are provided. The circumferential-direction narrow groove (3) is placed at an outer side of the circumferential-direction main groove (2A) in a tire width direction, and having a smaller width than the circumferential-direction main groove (2A). In a shoulder region at an outer side of the circumferential-direction narrow groove (3) in the tire width direction, first lateral grooves (4) are placed side by side at predetermined equal intervals in a tire circumferential direction. Each first lateral groove (4) extends in the tire width direction across a contact patch edge of the tire. The first lateral grooves (4) extend separated from the circumferential-direction narrow groove (3), so that an outer land portion with respect to the circumferential-direction narrow groove (3) in the tire width direction is formed as a rib (5). Each first lateral groove (4) is formed by contiguously connecting a first arcuate groove portion (4A), which is convex toward one side in the tire circumferential direction, and a second arcuate groove portion (4B), which is convex toward the other side in the tire circumferential direction.
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