| 摘要 |
A radial motor-cycle tyre (1) comprising a tread (2) reinforced between its edges (3,4) by a breaker assembly and a third breaker ply and having in its normally inflated fitted condition a camber value C/L of between 0.5 and 0.7, a reinforcing carcass ply (14) of radially disposed cords extending radially inside the breaker assembly and between two bead regions (10,11) and wrapped in each bead region around an annular bead core (12,13) from the axial inside to the outside to form carcass ply turn-ups (15,16) and between the tread edges (3,4) and bead regions (10,11), tyre sidewalls (8,9) wherein the breaker assembly comprises two breaker plies (5,7) comprising aromatic polyamide cords oppositely inclined with respect to the circumferential direction of the tyre and the third breaker ply(6) is disposed immediately radially outwardly of the breaker assembly characterised by a third breaker ply (6) comprising aromatic polyamide reinforcing cords disposed at an angle of 5 DEG or less to the circumferential direction of the tyre, extending axially in the central region of the tread and having a n axial width (s) of no greater than 30% of the tread width (TW). <IMAGE> |
