| CPC B60C 11/0309 (2013.01) [B60C 11/125 (2013.01); B60C 11/1259 (2013.01); B60C 11/1369 (2013.01); B60C 2011/0362 (2013.01); B60C 2011/0369 (2013.01); B60C 2011/0381 (2013.01)] | 18 Claims |
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1. A tyre comprising:
a tread portion being provided with at least one longitudinal groove extending in a tyre circumferential direction and at least one land portion being adjacent to the at least one longitudinal groove,
the at least one land portion having a ground contact surface defined between a first circumferential edge located on one side of the at least one land portion on the at least one longitudinal groove side and a second circumferential edge located on an opposite side to the first circumferential edge,
the at least one land portion being provided with first lateral grooves and sipes,
the first lateral grooves extending in a tyre axial direction from the first circumferential edge and having inner ends thereof terminating within the at least one land portion,
the first lateral grooves being provided with tie-bars on the respective inner ends side, the tie-bars having lengths smaller than lengths of the respective first lateral grooves, and
the sipes comprising first sipe elements extending from the second circumferential edge to the respective first lateral grooves and second sipe elements extending on the respective tie-bars,
wherein
each of the first lateral grooves comprises a pair of groove sidewalls extending inwardly in a tyre radial direction from the ground contact surface of the at least one land portion,
the pair of groove sidewalls comprises a pair of first portions located on the inner end side of each of the first lateral grooves,
in a cross-sectional view of each of the first lateral grooves, the pair of first portions extends from the ground contact surface and is connected to the second sipe element directly, and
the pair of first portions, in a cross-sectional view of each of the first lateral grooves, extends in a straight shape over its entire length.
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