| 摘要 |
<p>This invention provides an ultraflat pneumatic radial tire, for example, for SUV, having an aspect ratio of not more than 55% and a tire outer diameter of not less than 720 mm, which has improved load durability while realizing a weight reduction without lowering driveability. The ultraflat pneumatic radial tire comprises a carcass layer (4) formed of a single ply. Both ends of the carcass layer (4) are folded back around left and right bead cores (7) so as to wrap a bead filler (8). The folded part (4f) is wrapped by not more than 10% of the maximum width of the belt layer on the inner side of the end of the belt layer (5). The hardness of the bead filler (8) is brought to 65 to 80 in terms of JIS durometer A hardness, and the height hb of the bead filler (8) from a bead base is brought to 10 to 20% of the height H of the cross section of the tire.</p> |
