To provide a pneumatic radial tire enhancing operation stability while high speed durability.
The pneumatic radial tire 10 has a carcass layer 12; and a belt layer at an outside in a tire radial direction of a crown part 12C of the carcass layer 12, and an attachment inner side I becoming an inner side relative to the vehicle is designated. Further, the pneumatic radial tire 10 has a belt end reinforcement layer 26 folded from an inner side in a tire radial direction of a belt end 14I to an outer side in a tire radial direction so as to only embrace the belt end 14I of the attachment inner side I. As a result, the belt end reinforcement layer 26 is arranged at the attachment inner side I where a ground-contact pressure becomes high because of a negative camber and the high speed durability is ensured. Further at an attachment outer side 14E where a ground-contact area is spread at cornering, rigidity is lowered and the ground-contact area is smoothly spread to enhance the operation stability.
COPYRIGHT: (C)2008,JPO&INPIT
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Kato Kazunori
Hiroshi Fukuda