A heavy truck tire tread, comprising: a first tread groove that has a first tread groove first segment that extends from the shoulder edge (26, 28), wherein the first tread groove has a first tread groove second segment that extends from the first tread groove first segment, wherein the first tread groove first segment is oriented in a lateral direction a different amount than the orientation of the first tread groove second segment in the lateral direction; a second tread groove that has a second tread groove first segment that extends from the shoulder edge (26, 28), wherein the second tread groove has a second tread groove second segment that extends from the second tread groove first segment, wherein the second tread groove first segment is oriented in the lateral direction a different amount than the orientation of the second tread groove second segment in the lateral direction; a rib located between the first tread groove and the second tread groove, wherein the first tread groove and the second tread groove define a pair of tread grooves (14, 16), wherein the tread has a longitudinal direction, the lateral direction, and a thickness direction, wherein the pair of tread grooves (14, 16) and the rib are not oriented completely in the longitudinal direction so as to extend in both the longitudinal direction and the lateral direction; a shoulder block adjacent the rib and at the shoulder edge (26, 28) of the tread; and a decouple groove that decouples the shoulder block from the rib, wherein the decouple groove is spaced from and free from engagement with the shoulder edge (26, 28) of the tread, wherein the decouple groove extends at least twice as long in the longitudinal direction than in the lateral direction, wherein a width of the decouple groove is less than a width of the first tread groove, and wherein the width of the decouple groove is less than a width of the second tread groove, characterised in that the decouple groove extends to the first tread groove first segment and extends to the second tread groove second segment; wherein the tread has an average void depth that does not go past a twenty percent line, wherein the twenty percent line is twenty percent of a full void depth located from an outer surface of the tread, wherein the average void depth does not include decouple grooves and does not include the tread outboard from the decouple grooves in the lateral direction. a first tread groove that has a first tread groove first segment that extends from the shoulder edge (26, 28), wherein the first tread groove has a first tread groove second segment that extends from the first tread groove first segment, wherein the first tread groove first segment is oriented in a lateral direction a different amount than the orientation of the first tread groove second segment in the lateral direction; a second tread groove that has a second tread groove first segment that extends from the shoulder edge (26, 28), wherein the second tread groove has a second tread groove second segment that extends from the second tread groove first segment, wherein the second tread groove first segment is oriented in the lateral direction a different amount than the orientation of the second tread groove second segment in the lateral direction; a rib located between the first tread groove and the second tread groove, wherein the first tread groove and the second tread groove define a pair of tread grooves (14, 16), wherein the tread has a longitudinal direction, the lateral direction, and a thickness direction, wherein the pair of tread grooves (14, 16) and the rib are not oriented completely in the longitudinal direction so as to extend in both the longitudinal direction and the lateral direction; a shoulder block adjacent the rib and at the shoulder edge (26, 28) of the tread; and a decouple groove that decouples the shoulder block from the rib, wherein the decouple groove is spaced from and free from engagement with the shoulder edge (26, 28) of the tread, wherein the decouple groove extends at least twice as long in the longitudinal direction than in the lateral direction, wherein a width of the decouple groove is less than a width of the first tread groove, and wherein the width of the decouple groove is less than a width of the second tread groove, characterised in that the decouple groove extends to the first tread groove first segment and extends to the second tread groove second segment; wherein the tread has an average void depth that does not go past a twenty percent line, wherein the twenty percent line is twenty percent of a full void depth located from an outer surface of the tread, wherein the average void depth does not include decouple grooves and does not include the tread outboard from the decouple grooves in the lateral direction.