A tread block arrangement suitable for a tire or for a tread band for a tire , the tread block arrangement comprising - a tread block that limits a first primary sipe , the first primary sipe comprising - at least a first deep part (424 1 ) and a second deep part (424 2 ) separated from the first deep part (424 1 ) by a first shallow part (422 1 ), wherein - a depth (d2 1 ) of the first deep part (424 1 ) is at least three times a depth (d1) of the first shallow part (422 1 ), - a depth (d2 2 ) of the second deep part (424 2 ) is at least three times the depth (d1) of the first shallow part (422 1 ), - the tread block arrangement defines a primary boundary (B1) and a central line (CL), - a second shallow part (422 2 ) of the first primary sipe is located closer to the primary boundary (B1) than the first shallow part (422 1 ), - the second shallow part (422 2 ) is located further away from the central line (CL) than the first shallow part (422 1 ), - the first shallow part (422 1 ) has a first primary length (I 1 1) on a level (LBS) of a bottom of the first shallow part (422 1 ), and - the second shallow part (422 2 ) has a second primary length (I 2 1) on a level of a bottom of the second shallow part (422 2 ), characterized in that - the second primary length (I 2 1) is greater than the first primary length (I 1 1), - the first deep part (424 1 ) is limited in a longitudinal direction (LS) of the first primary sipe by a primary first end wall (E1 1 ) and a secondary first end wall (E2 1 ) such that a first angle (α 1 ) between the primary first end wall (E1 1 ) and the secondary first end wall (E2 1 ) is from 1 degree to 30 degrees, and - the second deep part (424 2 ) is limited in a longitudinal direction (LS) of the first primary sipe by a primary second end wall (E1 2 ) and a secondary second end wall (E2 2 ) such that a second angle (α 2 ) between the primary second end wall (E1 2 ) and the secondary second end wall (E2 2 ) is from 1 degree to 30 degrees. - a tread block that limits a first primary sipe , the first primary sipe comprising - at least a first deep part (424 1 ) and a second deep part (424 2 ) separated from the first deep part (424 1 ) by a first shallow part (422 1 ), wherein - a depth (d2 1 ) of the first deep part (424 1 ) is at least three times a depth (d1) of the first shallow part (422 1 ), - a depth (d2 2 ) of the second deep part (424 2 ) is at least three times the depth (d1) of the first shallow part (422 1 ), - the tread block arrangement defines a primary boundary (B1) and a central line (CL), - a second shallow part (422 2 ) of the first primary sipe is located closer to the primary boundary (B1) than the first shallow part (422 1 ), - the second shallow part (422 2 ) is located further away from the central line (CL) than the first shallow part (422 1 ), - the first shallow part (422 1 ) has a first primary length (I 1 1) on a level (LBS) of a bottom of the first shallow part (422 1 ), and - the second shallow part (422 2 ) has a second primary length (I 2 1) on a level of a bottom of the second shallow part (422 2 ), characterized in that - the second primary length (I 2 1) is greater than the first primary length (I 1 1), - the first deep part (424 1 ) is limited in a longitudinal direction (LS) of the first primary sipe by a primary first end wall (E1 1 ) and a secondary first end wall (E2 1 ) such that a first angle (α 1 ) between the primary first end wall (E1 1 ) and the secondary first end wall (E2 1 ) is from 1 degree to 30 degrees, and - the second deep part (424 2 ) is limited in a longitudinal direction (LS) of the first primary sipe by a primary second end wall (E1 2 ) and a secondary second end wall (E2 2 ) such that a second angle (α 2 ) between the primary second end wall (E1 2 ) and the secondary second end wall (E2 2 ) is from 1 degree to 30 degrees. <EOS>