| 摘要 |
PROBLEM TO BE SOLVED: To provide a new tread rubber. SOLUTION: A tread rubber 9 includes at least two types of rubber portions, a first rubber portion 9a made of a first rubber material and a second rubber portion 9b made of a second rubber material that is different from the first rubber material. The first rubber portion 9a and the second rubber portion 9b are both in the form of sheets. At a tire meridian section of the tread rubber 9 including a tire axis, the first rubber portion 9a and the second rubber portion 9b are formed by at least one wound material 10 overlapped in rings or spirals about a center.
|
