| 摘要 |
<p>The present invention relates to a method for increasing the performance of a tyre for heavy load vehicle wheels by varying the constraint formed between adjacent blocks. The invention further relates to a tyre (1) having a tread (2) comprising a central annular portion (L1) across an equatorial plane (X-X) and two shoulder annular portions (L2, L3), located on axially opposite sides relative to the central annular portion (L1). The central annular portion is separated from each shoulder annular portion by a respective first circumferential groove (3, 4). The central annular portion (L1) comprises a plurality of blocks (20), arranged in at least one circumferential row comprised between two circumferential grooves (3, 4, 5, 6, 7), and at least one transverse sipe (8) adapted to define two circumferentially consecutive blocks (20). The blocks are provided with at least one first deformation, adapted to define respective portion of mutual constraint in adjacent blocks, and with a secondary deformation grafted on the first deformation in the circumferential direction.</p> |
