| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic radial tire capable of improving a run flat traveling performance without practical inconvenience by heightening load supportability based on a tire structure while lowering normal pneumatic pressure. SOLUTION: In this pneumatic radial tire, carcass layers 4a, 4b including a plurality of carcass cords are bridged between a pair of right and left beads 3, 3, and belt layers 6a, 6b, 6c including a plurality of belt cords are arranged on outer peripheries of the carcass layers 4a, 4b at a crown part 1. 40-60% of pneumatic pressure indicated by a specification is used as normal pneumatic pressure. The load supportability based on the tire structure is 30-70%, and the load supportability based on inner pressure is 70-30%. COPYRIGHT: (C)2005,JPO&NCIPI
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