| 摘要 |
PURPOSE:To reduce rim dislocation, to improve durability and to restrain accuracy change in chronological rim assembly caused by driving of a tire so as to maintain driving stability by reducing an amount of a clearance generated between a bead outer surface and a rim flange at rim assembly. CONSTITUTION:On a bear outer surface 4, an air release means 5 is provided which extends further outward from an inner end D located in an area separating outward from a bead base line 7 for a distance more than 0.5 and less than 0.5 times of a separation point height Fh, the distance in the tire radial direction between the bead base line 7 and a separation point where the bead outer surface 4 of a tire mounted on a regular rim 10 is separated from a rim flange 11, and forms an air communication path for escaping air between a bead part 2 and the rim flange 11 in mounting of the tire on the regular rim. |
