| 摘要 |
PURPOSE: To provide a radial tire suitable for an automobile capable of improving the riding comfort performance by the vibration. CONSTITUTION: In a radial tire provided with a carcass 6 where the cord is arranged in the radial direction and a belt layer 7 to be arranged on the outer side in the radial direction of this carcass 6, the carcass profile 9 which is fitted to a wide rim which is wider than the standard rim by 0.5 inch and when the regular inner pressure is filled therein satisfies the inequalities of 0.69<=R1/rc<=1.39, and 0.99<R2/R3<1.17, where R1 is the radius of curvature of the first semi-circle C1 connecting the first point (b) and the second point (c), R2 is the radius of curvature of the second semi-circle C2 connecting the third point (d) and the fourth point (e), and R3 is the radius of curvature of the third semi-circle C3 connecting the fourth point (e) and the sixth point (f).
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