Tread for an agricultural vehicle tire

A tire for an agricultural vehicle, comprising:

• a tread comprising two rows of lugs that are separated from one another by grooves;
• two consecutive said lugs in one and the same row being spaced apart, in a circumferential direction, by a circumferential distance P;
• each said lug extending over a radial height in a radial direction from a bottom surface to a contact face, extending over an axial width in an axial direction from an axially inner end face to an axially outer end face, and extending over a mean thickness in the circumferential direction from a trailing face to a leading face;
• each said lug having a mean direction that passes through an axially inner end point of the trailing face and through an axially outer end point of the trailing face and forms a mean angle with the circumferential direction,
• wherein the leading face of each said lug comprises a discontinuity that extends circumferentially in the direction of the trailing face, axially inwards from the axially outer end face and radially inwards from the contact face,
• wherein the discontinuity on the leading face of each said lug is continued by a recess formed in the bottom surface extending circumferentially from the discontinuity over a circumferential distance, axially inwards from the axially outer end face over an axial distance equal to the axial distance over which the discontinuity on the leading face of the lug axially extends, and radially inwards from the bottom surface over a radial distance,
• wherein the tread is comprised of a first and a second row of said lugs disposed in chevrons with respect to the equatorial plane of the tire,
• wherein the first and the second rows of the lugs partially circumferentially overlap at their respective axially inner end points,
• wherein the mean angle of said each lug is at least equal to 20° and at most equal to 70°, and
• wherein the trailing face of each said lug comprises a trailing discontinuity protrusion that extends circumferentially in the direction of the leading face of the closest consecutive said lug, axially inwards from the axially outer end face and radially inwards from the contact face at most as far as the bottom surface,
• wherein the trailing discontinuity on the trailing face of each said lug extends axially inwards over an axial distance at least equal to the axial distance over which the discontinuity on the leading face of the lug extends axially.