Pneumatic tire

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 to 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 to a depth direction of the sipe while maintaining its direction and opening configuration.