Patent ID: 11872848
Assignee: THE YOKOHAMA RUBBER CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 12:
13. A pneumatic tire comprising:
a mounting direction indicator that indicates a mounting direction of the tire to a vehicle;
an inner side shoulder main groove and an inner side center main groove that are formed in a region inward in a vehicle width direction demarcated by a tire equatorial plane and extend in a tire circumferential direction;
an outer side center main groove that is formed in a region outward in the vehicle width direction and extends in the tire circumferential direction;
a circumferential narrow groove that is formed outward than the outer side center main groove in a tire lateral direction and extends in the tire circumferential direction;
five rows of land portions formed by being defined by the inner side shoulder main groove, the inner side center main groove, the outer side center main groove and the circumferential narrow groove;
a groove opening portion of the inner side shoulder main groove and a groove opening portion of the inner side center main groove having edge portions with a straight shape, the groove opening portion of the outer side center main groove having an edge portion chamfered in a zigzag shape; and
a groove width Wg1 of the inner side shoulder main groove, a groove width Wg2 of the inner side center main groove, and a groove width Wg3 of the outer side center main groove having a relationship Wg1<Wg3 and Wg2<Wg3; wherein
the land portion defined by the inner side center main groove and the outer side center main groove includes a plurality of center lug grooves, and the center lug groove extends from the inner side center main groove toward the tire equatorial plane and terminates in a center land portion; and
a pitch length P32 of the zigzag shapes of the outer side center main groove has a relationship P31<P32 to a pitch length P31 of the plurality of center lug grooves.