Abstract: Agricultural vehicle tire having tread (1) with bearing surface (10) on which main lugs (3) and shorter secondary lugs (3) are formed on each side of the equatorial mid-plane (XX?), each secondary lug (3) interposed between two main lugs (2). The main lugs (2) and secondary lugs (3) make up, in the radial direction, a lens (21, 31) of a first material, each lens (21, 31) surmounted by a second material extending to the contact face of the main lugs and the secondary lugs. The viscous modulus G?1 of the first material is at most 60% of the viscous modulus G?2 of the second material. The complex modulus G?1 of the first material differs from the complex modulus G?2 of the second material, the difference between these complex moduli being at most 30% of the complex modulus G?2 of the second material.

Abstract: Tire tread with main lugs extending from a tread edge to the equatorial mid-plane on each side of which are a plurality of secondary lugs (4) extending over 40% to 60% of the tread half-width, each secondary lug (4) having a width 20% to 40% of the shortest distance between two main lugs (3). Each main lug (3) comprises, on its trailing lateral face (32), a widened portion (320) of width D1 extending over an axial distance from a tread edge and being joined to the main lug by end face (321) inclined at an angle B1 between 18 degrees and 25 degrees to the circumferential direction. Each secondary lug (4) has end face (43) inclined at an angle S1 with the same orientation as angle B1 with respect to the circumferential direction, angle S1 being between 18 degrees and 25 degrees.

Abstract: Agricultural vehicle tire having tread (1) with bearing surface (10) on which main lugs (3) and shorter secondary lugs (3) are formed on each side of the equatorial mid-plane (XX?), each secondary lug (3) interposed between two main lugs (2). The main lugs (2) and secondary lugs (3) make up, in the radial direction, a lens (21, 31) of a first material, each lens (21, 31) surmounted by a second material extending to the contact face of the main lugs and the secondary lugs. The viscous modulus G?1 of the first material is at most 60% of the viscous modulus G?2 of the second material. The complex modulus G*1 of the first material differs from the complex modulus G*2 of the second material, the difference between these complex moduli being at most 30% of the complex modulus G*2 of the second material.

Abstract: Tire tread with main lugs extending from a tread edge to the equatorial mid-plane on each side of which are a plurality of secondary lugs (4) extending over 40% to 60% of the tread half-width, each secondary lug (4) having a width 20% to 40% of the shortest distance between two main lugs (3). Each main lug (3) comprises, on its trailing lateral face (32), a widened portion (320) of width D1 extending over an axial distance from a tread edge and being joined to the main lug by end face (321) inclined at an angle B1 between 18 degrees and 25 degrees to the circumferential direction. Each secondary lug (4) has end face (43) inclined at an angle 51 with the same orientation as angle B1 with respect to the circumferential direction, angle 51 being between 18 degrees and 25 degrees.

Abstract: Tread band for a tire having a tread surface and comprising a plurality of recesses of total depth H* opening onto the tread surface, each recess comprising at least two cavities of a first type of cavities, each of these cavities of a first type being delimited by a main wall and having a depth Hi, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the said wall that are furthest towards the outside of the tread forms an exterior contour that is closed and of length Ce, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the main wall furthest towards the inside of the tread forms an interior contour which is closed and of length of length Ci, this tread band being characterized in that the cavities of a first type are arranged at different l

Abstract: Tread band for a tire having a tread surface and comprising a plurality of recesses of total depth H* opening onto the tread surface, each recess comprising at least two cavities of a first type of cavities, each of these cavities of a first type being delimited by a main wall and having a depth Hi, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the said wall that are furthest towards the outside of the tread forms an exterior contour that is closed and of length Ce, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the main wall furthest towards the inside of the tread forms an interior contour which is closed and of length of length Ci, this tread band being characterized in that the cavities of a first type are arranged at different l