| 摘要 |
<p>A pneumatic radial tyre comprising a carcass (6) comprising an outer ply (6A) and an inner ply (6B), each carcass ply being made of organic fibre cords and extending between bead portions (4) through a tread portion (2) and sidewall portions (3), a belt (7) disposed radially outside the carcass (6) in the tread portion (2) and comprising a radially inner ply (7A) and a radially outer ply (7B), each belt ply being made of steel belt cords, characterised by a first damping rubber layer (9) disposed between the outer carcass ply (6A) and the inner carcass ply (6B), the first damping rubber layer (9) having an axial width (W1) of 0.8 to 1.2 times the axial width (WB2) of the radially inner belt ply (7A) and a thickness (TI) of 0.5 to 2.0 mm, and a second damping rubber layer (10) disposed between the outer carcass ply (6A) and the radially inner belt ply (7A), the second damping rubber layer having an axial width (W2) of 0.8 to 1.2 times the axial width (WB2) of the radially inner belt ply (7A) and a thickness (T2) of 0.5 to 2.0 mm. <IMAGE></p> |
