Tread for a pneumatic tire

A tread for a pneumatic tire comprising:

• v. a first circumferential groove extending in a circumferential direction of the pneumatic tire;
• vi. a second circumferential groove extending in the circumferential direction of the pneumatic tire;
• vii. a third circumferential groove extending in the circumferential direction of the pneumatic tire;
• and
• viii. a fourth circumferential groove extending in the circumferential direction of the pneumatic tire, the first, second, third, and fourth circumferential grooves defining first, second, third, fourth, and fifth ribs, each of the ribs including lateral grooves and lateral sipes extending across each rib, the lateral grooves of the first rib each having chamfers on an upper side at an intersection with the first circumferential groove, the lateral sipes of the third rib each having crimped portions both where the sipes intersect the second groove and where the sipes intersect the third groove.