| 摘要 |
<p>A tyre (1) for vehicle wheels, in particular for heavy load vehicle wheels, has a tread band (10) comprising an annular central portion (10i) astride an equatorial plane (Y-Y) and two annular shoulder portions (10ii) arranged on axially opposite sides with respect to the annular central portion (10i). The annular central portion (10i) is separated from a respective annular shoulder portion (10ii) by a respective circumferential groove (16), The annular central portion (10i) comprises a plurality., of blocks (20) arranged along at least one circumferential row (21) comprised between two circumferential grooves (16), and at least one transversal sipe (30) arranged between two circumferentially consecutive blocks (20). The transversal sipe has a main surface oriented in a substantially radial direction and provided with at least one deformation defining, in the adjacent blocks (20), respective portions of mutual constraint. The deformation has an overall decreasing width from an axial end of the sipe to a central zone thereof and has a radial extension smaller than that of aforementioned main surface.</p> |
