Pneumatic tire

A pneumatic tire comprising

• a tread portion provided with:
• a pair of circumferentially and continuously extending center main grooves on both sides of a tire equator to define a center portion therebetween;
• a pair of circumferentially and continuously extending shoulder main grooves arranged axially outside the center main grooves to define a middle portion between the center main groove and the shoulder main groove on each side of the tire equator;
• and a plurality of middle lateral grooves to divide the middle portion into a middle block row including a plurality of middle blocks,
• each center main groove extending in a zigzag manner including a plurality of inclined long sides and a plurality of inclined short sides, which are alternately arranged in a circumferential direction of the tire,
• the center portion being provided with at least six axially extending center sipes within a circumferential region corresponding to a pitch of circumferentially adjacent middle lateral grooves, and
• each middle block having a circumferential length in a range of from 85% to 95% with respect to the pitch, and being provided with at least one axially extending middle sipe, wherein the number of middle sipe on each middle block is five or less.