PNEUMATIC TIRE, TIRE WEAR INFORMATION ACQUISITION SYSTEM, AND METHOD FOR ACQUIRING WEAR INFORMATION OF PNEUMATIC TIRE

摘要

In order to acquire highly accurate wear information, a tread part of a pneumatic tire is provided with: a columnar wear measurement magnet which wears down along with the tread rubber, and thereby decreases in magnetic flux density or magnetic field intensity; and a columnar reference magnet positioned such that the reference magnet does not wear down along with the tread rubber. The wear measurement magnet and the reference magnet extend from a position next to a tread surface, at which the tread part contacts the ground, toward a tire cavity region of the pneumatic tire, and the end of the reference magnet on the tread surface side thereof is positioned farther from the thread surface than is the end of the wear measurement magnet on the tread surface side thereof.