A tire comprising a tread portion including a first land portion having a first edge and a second edge which extend in a tire circumferential direction, and a ground contacting top surface formed therebetween, the first land portion provided with first lateral sipes extending from the first edge in a tire axial direction and ending to have a closed end within the ground contacting top surface of the first land portion, the first lateral sipes each having a first sipe wall positioned on a first side in the tire circumferential direction, and a second sipe wall positioned on a second side in the tire circumferential direction, the first lateral sipes each opened at a ground contacting top surface of the first land portion via a chamfer portion, the chamfer portion comprising a first sloped surface continued from the first sipe wall, and a second sloped surface continued from the second sipe wall, wherein, in a top view of the first land portion, a width W1 of the first sloped surface is larger than a width W2 of the second sloped surface, the width W1 of the first sloped surface is constant over at least 70% of the first sipe wall in the longitudinal direction of the sipe, the mounting direction of the tire to a vehicle is specified whereby the tread portion has an outboard tread edge to be positioned away from the center of the vehicle body and an inboard tread edge to be positioned close to the center of the vehicle body, the tread portion is provided with four circumferential grooves (6, 7, 8, 9) continuously extending in the tire circumferential direction so as to axially divide the tread portion into five land portions (11, 12, 13, 14, 15), the five land portions include a second land portion disposed on the tire equator, and a third land portion including the inboard tread edge, characterized in that the first land portion is positioned between the second land portion and the third land portion, the first edge is an axially inner edge and the second edge is an axially outer edge, the circumferential grooves include a second circumferential groove between the first land portion and the third land portion, the first land portion is provided with second lateral sipes which extend from the second edge and end so as to have closed ends within the ground contacting top surface of the first land portion, the third land portion is provided with second shallow grooves which extend from the second circumferential groove and end so as to have closed ends within the ground contacting top surface of the third land portion, in a plan view of the tread portion, virtual zones formed by extending the second lateral sipes in their longitudinal directions overlap with none of the second shallow grooves, and axial lengths of the second shallow grooves are smaller than axial lengths of the second lateral sipes. a tread portion including a first land portion having a first edge and a second edge which extend in a tire circumferential direction, and a ground contacting top surface formed therebetween, the first land portion provided with first lateral sipes extending from the first edge in a tire axial direction and ending to have a closed end within the ground contacting top surface of the first land portion, the first lateral sipes each having a first sipe wall positioned on a first side in the tire circumferential direction, and a second sipe wall positioned on a second side in the tire circumferential direction, the first lateral sipes each opened at a ground contacting top surface of the first land portion via a chamfer portion, the chamfer portion comprising a first sloped surface continued from the first sipe wall, and a second sloped surface continued from the second sipe wall, in a top view of the first land portion, a width W1 of the first sloped surface is larger than a width W2 of the second sloped surface, the width W1 of the first sloped surface is constant over at least 70% of the first sipe wall in the longitudinal direction of the sipe, the mounting direction of the tire to a vehicle is specified whereby the tread portion has an outboard tread edge to be positioned away from the center of the vehicle body and an inboard tread edge to be positioned close to the center of the vehicle body, the tread portion is provided with four circumferential grooves (6, 7, 8, 9) continuously extending in the tire circumferential direction so as to axially divide the tread portion into five land portions (11, 12, 13, 14, 15), the five land portions include a second land portion disposed on the tire equator, and a third land portion including the inboard tread edge, the first land portion is positioned between the second land portion and the third land portion, the first edge is an axially inner edge and the second edge is an axially outer edge, the circumferential grooves include a second circumferential groove between the first land portion and the third land portion, the first land portion is provided with second lateral sipes which extend from the second edge and end so as to have closed ends within the ground contacting top surface of the first land portion, the third land portion is provided with second shallow grooves which extend from the second circumferential groove and end so as to have closed ends within the ground contacting top surface of the third land portion, in a plan view of the tread portion, virtual zones formed by extending the second lateral sipes in their longitudinal directions overlap with none of the second shallow grooves, and axial lengths of the second shallow grooves are smaller than axial lengths of the second lateral sipes.