| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of improving heating resistant performance of a tire. <P>SOLUTION: This pneumatic tire 1 includes: a pair of bead cores 2 and 2; a pair of bead fillers 3 and 3 respectively arranged outside in the tire radial direction of the pair of bead cores 2 and 2; a carcass layer 4 extended between the pair of bead cores 2 and 2; tread rubber 6 arranged outside in the tire radial direction of the carcass layer 4 and constituting a tread part; and a pair of sidewall rubbers 7 and 7 respectively arranged outside in the tire width direction of the carcass layer 4 and constituting right-left sidewall parts. In a cross-sectional view in the tire meridian direction, an average loss tangent tanδ_in and the cross-sectional area S_in of one side tread area and an average loss tangent tanδ_out and the cross-sectional area S_out of the other side tread area, have the relationship of 0.10≤(tanδ_in×S_in)/(tanδ_out×S_out)≤0.90. <P>COPYRIGHT: (C)2013,JPO&INPIT |
