| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic tire which realizes the improvement of abrasion resistance and braking performance while maintaining turn-over proofing performance. <P>SOLUTION: A tread surface 11 comprises the arc 31 of a central part, an arc 32 at the shoulder side and the arc 33 of a shoulder part. When a contour range which is a width from an equatorial surface 5 to the end of the arc 31 of the central part is made to be L1, and a tread development width is made to be TDW, and the curvature radius of the arc 31 of the central part is made to be TR1, and the curvature radius of the arc 32 at the shoulder side is made to be TR2, and the outer diameter of the tire is made to be OD, and a total width is made to be SW, and a flatness is made to be β, the tread surface 11 is formed to allow a value determined from F1=L1/(TDW×0.5) to have a range of 0.64≤F1≤0.7, to allow a value determined from F2=TR1/OD to have a range of 1.2≤F2≤2.0, to allow a value determined from F3=TR2/TR1 to have a range of 0.1≤F3≤0.2, and to allow a value determined from F4=(β×TDW)/(100×SW) to have a range of 0.35≤F4≤0.48. <P>COPYRIGHT: (C)2009,JPO&INPIT |
