| abstract |
(57) [Problem] To obtain a foamed tire having a necessary and sufficient ride comfort while maintaining various performances relating to durability such as sufficient tire rigidity, rim slip resistance, and abrasion resistance. A non-foamed surface layer (4) covers at least the tread side and the side of a foamed layer (2) having an expansion ratio of 1.5 to 2.5, and the thickness of the side surface layer (4) with respect to the tire width (W). 2 to 8%, and the thickness of the surface layer 4 on the tread side is changed to the tire height H. 5-15% with respect to JIS-K of surface layer 4 6301, A-type hardness of 45 to 60 degrees, JI of foam layer 2 S-K7312, hardness of type C is 40-70 degrees, In addition, the tensile force at the time of 100% extension of the surface layer 4 is 1.5 The surface layer 4 and the foam layer 2 were formed from diene rubber. |