| 摘要 |
<p>A heavy duty tire comprising a carcass (14), the carcass (14) having one or more cord reinforced plies (19) and a pair of bead portions, each bead portion having at least one annular inextensible bead core (16) about which the cord reinforced plies (19) are wrapped, a tread (12) and a belt reinforcing structure (21) disposed radially outward of the carcass (14). The bead portion comprises an apex (24) which extends radially outward of the bead core (16) and a chafer (28). The tire further comprises a first turn-up pad (30) comprising an elastomeric material, the first turn-up pad (30) being located adjacent the chafer (28), and a second turn-up pad (40) comprising an elastomeric material, the second turn-up pad (40) being located between the one or more plies (19) and the first turn-up pad (30) and/or adjacent the first turn-up pad (30). The elastomeric material of the first turn-up pad (30) has an elastomeric or storage modulus G' less than the elastomeric or storage modulus G' of the elastomeric material of the second turn-up pad (40); and/or the bead core (16) comprises an annular tensile member having a width less than 82 mm.</p> |
