| 摘要 |
<p>A pneumatic tyre comprises a radially inner bead core (9A) disposed in at least one of bead portions (4), a radially outer bead core (9B) disposed radially outside the inner bead core (9A), a buffer rubber layer (10) disposed between the radially inner bead core (9A) and radially outer bead core (9B) to provide a predetermined space therebetween, and a toroidal carcass (6) extending between the bead portions through the tread portion and sidewall portions, wherein the carcass comprises a ply of cords turned up around the radially outer bead core (9B) to be secured thereto, passing between the radially outer bead core (9B) and the buffer rubber layer (10), so that a radially outward tension of the carcass caused by tyre inflation acts less on the radially inner bead core (9A) than the radially outer bead core (9B). Therefore, the transmission of vibration from the tread portion to bead portion is effectively decreased to reduce road noise. <IMAGE></p> |
