Tread having turn around sipe

A heavy truck tire tread that has a lateral direction, a thickness direction, and a circumferential direction, comprising:

• a sipe that has a first segment that extends forward in the circumferential direction and outboard in the lateral direction, wherein the first segment has a first segment inboard point and a first segment outboard point and a first segment line that extends from the first segment inboard point to the first segment outboard point, wherein a first segment angle is less than 90 degrees and is measured between a first segment lateral line and the first segment line, wherein the first segment lateral line extends completely in the lateral direction and extends through the first segment inboard point, wherein the first segment inboard point is the farthest inboard position of the first segment in the lateral direction, and wherein the first segment outboard point is the farthest outboard position of the first segment in the lateral direction;
• a second segment that extends forward in the circumferential direction and outboard in the lateral direction, wherein the second segment has a second segment inboard point coincident with the first segment outboard point, wherein the second segment has a second segment outboard point that is a farthest outboard position of the second segment in the lateral direction, wherein the second segment has a second segment line that extends from the second segment inboard point to the second segment outboard point, wherein a second segment angle is less than 90 degrees and is measured between a second segment lateral line and the second segment line, wherein the second segment lateral line extends completely in the lateral direction and extends through the second segment inboard point;
• wherein the first segment angle is greater than the second segment angle;
• a third segment that extends forward in the circumferential direction and outboard in the lateral direction, wherein the third segment has a third segment inboard point and a third segment outboard point and a third segment line that extends from the third segment inboard point to the third segment outboard point, wherein a third segment angle is less than 90 degrees and is measured between a third segment lateral line and the third segment line, wherein the third segment lateral line extends completely in the lateral direction and extends through the third segment inboard point, wherein the third segment inboard point is the farthest inboard position of the third segment in the lateral direction, and wherein the third segment outboard point is the farthest outboard position of the third segment in the lateral direction;
• a fourth segment that extends forward in the circumferential direction and outboard in the lateral direction, wherein the fourth segment has a fourth segment inboard point coincident with the third segment outboard point, wherein the fourth segment has a fourth segment outboard point that is a farthest outboard position of the fourth segment in the lateral direction, wherein the fourth segment has a fourth segment line that extends from the fourth segment inboard point to the fourth segment outboard point, wherein a fourth segment angle is less than 90 degrees and is measured between a fourth segment lateral line and the fourth segment line, wherein the fourth segment lateral line extends completely in the lateral direction and extends through the fourth segment inboard point;
• wherein the third segment angle is greater than the fourth segment angle;
• a fifth segment that extends from the second segment outboard point to the fourth segment outboard point;
• a first tread edge;
• a second tread edge with a rolling tread width defined from the first tread edge to the second edge in the lateral direction, wherein the fifth segment is located within 20% of the length of the rolling tread width from the first tread edge, wherein the sipe is free from engagement with the first tread edge;
• a rib that is not oriented completely in the circumferential direction so as to extend both in the circumferential direction and the lateral direction, wherein the sipe is located in the rib;
• wherein the tread has a lateral midpoint that is located equal distance to the first tread edge and the second tread edge in the lateral direction, wherein the sipe extends from the first segment inboard point and then across the lateral midpoint and turns around and extends back again across the lateral midpoint to the third segment inboard point.