Patent ID: 8807181

Claim:
A tire comprising a foamed rubber layer provided on a surface substantially brought into contact with a road surface, wherein the foamed rubber layer has a foaming rate falling in a range of 3 to 50%; at least natural rubber and polybutadiene are contained in a rubber component; natural rubber is contained in a range of 20 to 70 mass parts, and polybutadiene is contained in a range of 30 to 80 mass parts each per 100 mass parts of the rubber component; carbon black is contained in a range of 5 to 55 mass parts per 100 mass parts of the rubber component; silica is contained in a range of 5 to 55 mass parts per 100 mass parts of the rubber component; (a) organic fibers containing no fine particles and (b) fine particle-containing organic fibers containing fine particles are contained and the portion of (a)/(b) falls in a range of 95/5 to 5/95 wherein the organic fiber resin used for (a) the organic fibers and (b) the fine particle-containing organic fibers is molten until the rubber composition reaches a vulcanization maximum temperature; and at least one inorganic compound powder having a particle diameter of 10 μm or less represented by the following Formula (I) is contained in a range of 5 to 20 mass parts per 100 mass parts of the rubber component: M. x SiO 2 .y H 2 O (I) (M in Formula (I) is oxide or hydroxide of metal selected from Al, Mg, Ti and Ca, and x and y may be different from each other and are an integer of 0 to 10).