| 摘要 |
<p>A heavy duty radial tyre for a 15 degree taper centre drop rim having improved bead durability is disclosed. The tyre comprises a pair of bead cores (5) disposed one in each bead portion (4), a steel cord radial carcass ply turned up around the bead cores (5) from the axially inside to the outside, a hard rubber bead apex (11) disposed between the carcass ply main portion and each turnup portion, a bead filler (10) of reinforcing cords disposed axially outside each carcass ply turnup portion (6B), and a rubber strip (9) disposed between each turnup portion and the bead filler, the rubber strip being harder than the bead apex (11), and the difference B-D of the inside diameter B of the bead cores from the rim diameter D of the rim is in the range of from -4 to 1 mm. <IMAGE></p> |
