| 摘要 |
PROBLEM TO BE SOLVED: To significantly improve ran-flat durability, while suppressing increase in a tire mass. SOLUTION: A run-flat tire 1 includes: a carcass 6 from a tread part 2 to a bead core 5 of a bead part 4 through a side wall part 3; and a side reinforcing rubber layer 9 of a substantially crescent shape cross section, which is arranged inside the carcass 6 of the side wall part 3. A coating film 11 of right thermal conductivity whose thermal conductivity is 0.3W/(m-K) is formed in a tire inner cavity face 12, while at least a part of the coating film 11 is provided in a projection region T of the side reinforcing rubber, where the side reinforcing rubber layer 9 is projected on the tire inner cavity face 12. COPYRIGHT: (C)2012,JPO&INPIT |
