| 摘要 |
The present invention relates to a tyre for an agricultural vehicle, specifically to the tread thereof, and aims to improve the compromise between wear resistance, at the centre of the tread, when used on the road, and the resistance to mechanical attacks, on the shoulders of the tread, when used in the field; according to the invention, the tread (2) comprises a first median portion (21) having an axial width Li, at least equal to 0.25 times and at most equal to 0.75 times the axial width L, and second and third side portions (22, 23), extending respectively axially towards the outside, from the first median portion (21) to an axial end (E, E'), and having respective axial widths (L2, L3); each bar portion (311), axially included in the first median portion (21) and extending radially towards the inside, from the contact surface (6) to a first interface (7), over a radial distance D1 at least equal to 0.5 times and at most equal to 1 time the radial height H of the bar, is made up of a first elastomer mixture; each bar portion (321), axially included in one of the second or third side portions (22, 23) and extending radially towards the inside, from the contact surface (6) to a second interface (8), over a radial distance D2 at least equal to 0.5 times and at most equal to 1 times the radial height H of the bar, is made up of a second elastomer mixture. |
