| 摘要 |
A heavy duty radial tyre (1) such as may be used for a truck or a bus comprising a reinforced carcass ply (2) extending between two bead regions (3) through sidewall regions (4) to a tread region (5) and a reinforcing breaker (7) disposed in the tread region (5) extending circumferentially around the tyre (1) radially outside the carcass ply characterised in that the tread region (5) is substantially curved in cross-section and has a camber value C/L of between 0.25 to 0.75, the breaker (7) comprises at least two plies (7A,7B,7C) of reinforcing fabric, a narrower breaker ply (7A) which is radially innermost and a wider breaker ply (7C) which is radially outermost, and each of the breaker plies (7A,7B,7C) except the outermost ply (7C) has adjacent to each of its lateral edges a circumferentially extending support strip (8A,8B) which extends laterally outwards from the edge of the breaker ply to at least the lateral position of the edge of the widest breaker ply (7C). <IMAGE> |
