Patent ID: 11964513
Assignee: BRIDGESTONE CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A tire comprising:
circumferential grooves each along a circumferential direction of a tire;
lateral grooves at predetermined intervals along the circumferential direction of the tire, each of the lateral grooves having one end opened to a side of the tire and the other end communicated with the circumferential groove; and
narrow grooves in blocks defined by the circumferential grooves and the lateral grooves, each of the narrow grooves having one end opened to the side of the tire and the other end communicated with the circumferential groove, wherein
the tire includes a projecting surface that projects at a position more to one side in the circumferential direction of the tire than the narrow groove that is opened to the tire side, and projects further toward an outer side in a tire width direction than a tire side shape to which the narrow groove is opened,
the projecting surface includes a first projecting surface that extends in the tire radial direction within a range of the groove depth of the narrow groove, and a second projecting surface inward of the first projecting surface in the tire radial direction,
the first projecting surface and the second projecting surface are connected via a spherical surface, and
the projecting surface extends in a tire radial direction from a ground contact end to radially inward of a groove bottom of the narrow groove.