A tire comprises center blocks 4 comprising a first center lateral groove 5A and a second center closed sipe 6a opposed to each other in a tire axial direction, and a second center lateral groove 5B and a first center closed sipe 6b axially opposed to each other. Lengths thereof satisfy the followings: LA/LA0≤½, LB/LB0≤½, Lb/Lb0 in a range of from ⅓ to ⅔, La/La0 in a range of from ⅓ to ⅔, LA