A pneumatic tire is provided with a center land portion between two zigzag crown main grooves, and two middle land portions between two zigzag shoulder main grooves and the two crown main grooves. Each center block is provided with center sipes between which a central part defining the maximum width of the center block is formed. The middle land portion is divided into middle blocks by alternate, oppositely inclined first middle axial grooves and second middle axial grooves. Each middle block is provided with nonparallel middle sipes.