| 摘要 |
A heavy duty radial tyre comprises a tread portion (15) which is provided with blocks (2) having acute angled corners (B) each defined between a pair of edge lines (3A and 3B) of the block. The acute angled corners (B) are provided with a down slope (9) which becomes steeper from the radially outside to the inside of the tyre. Preferably, the size of the slope (9) is 1 to 10 mm along the one edge line (3A), and 1 to 10 mm along the other edge line (3B), and 5 to 13 mm in the radial direction of the tyre. <IMAGE> |
