To provide a rubber composition for use in tires which is capable of inhibiting the crack on the surface of a tire while suppressing the usage of a component derived from the petroleum resources as well as which is capable of suppressing the external appearance defect on tires; and a tire made by using this rubber composition for use in tires.
This rubber composition for use in tires has a content of the normal paraffin of natural wax of 75 or more to 85 mass% or less relative to the whole of chain saturated hydrocarbons, a content of a 23-41C natural paraffin of from 2 or more to 4 mass% or less relative to the whole of normal paraffins, a content of the natural wax of a ≥36C isoparaffin of from 15 or more to 25 mass% or less relative to the whole of chain saturated hydrocarbons, and a content of the natural wax of 1 or more to 2.5 pts.mass or less relative to 100 pts.mass of the rubber component; and also a tire made by using the same is disclosed.
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Nobuo Arakawa