Patent ID: 11958318
Assignee: THE YOKOHAMA RUBBER CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A pneumatic tire, comprising:
a pair of first main grooves extending in a tire circumferential direction formed at a position on either outer side in a tire lateral direction of a first land portion including a tire equatorial plane, wherein the first land portion is a rib that is continuous in the tire circumferential direction;
a pair of second main grooves extending in the tire circumferential direction formed at a position outward from the first main grooves in the tire lateral direction; and
first lug grooves formed in a second land portion between the first main grooves and the second main grooves, the first lug grooves opening to one of the first main grooves at one end and opening to one of the second main grooves at an other end;
the first lug grooves having a groove width of 2 mm or greater;
the first lug grooves having an identical inclination direction in the tire lateral direction with respect to the tire circumferential direction;
the first lug grooves forming an angle with a straight line in the tire circumferential direction ranging from 40 degrees or greater to 80 degrees or less;
the second main grooves defining third land portions outward of the second main grooves in the tire lateral direction;
the third land portions being provided with second lug grooves, the second lug grooves not communicating with the second main grooves;
circumferential narrow grooves being provided in the third land portions, the circumferential narrow grooves each extending in the tire circumferential direction, the circumferential narrow grooves each being formed into a zigzag shape including a long portion and a short portion, the long portion of the zigzag shape being inclined in a direction identical to an inclination direction of the first lug grooves;
the second lug grooves extending from the short portion of the zigzag shape toward the second main grooves and terminating in the third land portions; and
the third land portions being provided with pairs of sipes that are inclined toward one another toward an outer side in the tire lateral direction.