Patent ID: 9555669
Date: 2017-01-31
CPC Classifications: B60C

Claim:
1. A pneumatic tire comprising: a tread portion having an asymmetric pattern having a designated installing direction to a vehicle for defining an inboard tread edge and an outboard tread edge; and the asymmetric pattern including: an outboard shoulder main groove that continuously extends in a circumferential direction of the tire nearest to the outboard tread edge; an inboard shoulder main groove that continuously extends in a circumferential direction of the tire nearest to the inboard tread edge, an outboard shoulder portion between the outboard shoulder main groove and the outboard tread edge; a middle portion between the outboard shoulder main groove and the inboard shoulder main groove; and an inboard shoulder portion between the inboard shoulder main groove and the inboard tread edge, wherein the outboard shoulder portion is provided with a three dimensional sipe that has a pair of sipe surfaces extending in a depth direction of the sipe while changing its direction or opening configuration, and the inboard shoulder portion or the middle portion is provided with a two dimensional sipe that has a pair of sipe surfaces extending in a depth direction of the sipe while maintaining its direction and opening configuration, the outboard shoulder main groove comprises an axially inner groove edge that extends in a zigzag manner, the middle portion comprises an outboard middle portion disposed adjacently to the outboard shoulder land portion, and the middle portion is provided with a middle lug groove that extends from the axially inner groove edge of the outboard shoulder main groove to an axially inner end terminating within the outboard middle portion in a one-end opening manner; wherein the outboard shoulder portion is provided with a circumferentially extending shoulder narrow groove such that the outboard shoulder portion is divided into an axially inner shoulder narrow portion and an axially outer shoulder wide portion; and wherein the axially inner shoulder narrow portion is a plain rib without being provided any grooves or sipes.