| 摘要 |
PURPOSE:To reduce a noise level, by installing an alignment mark in a tire and a wheel so as to cause a lateral groove, where dual tires draw nearer, to become opposite phase, in case of dual-tire wheels. CONSTITUTION:A mark 13 is formed in a distance at one-fourth of a pitch P of a lateral groove 12 from the center of the lateral groove 12 of a tire 10. In addition, a mark 14 is formed on the circumference of a wheel 11 as well. And, both these tie and wheel marks 13 and 14 are made congruous with each other whereby the tire 10 is set to the wheel 11. Each mark 14 of this wheel 11 is made congruous with each other, assembling it into dual wheels. With this constitution, the lateral groove 12, where dual wheels 19 and 10 draw nearer to each other, come to opposite phase to each other, thus a noise peak becomes shifted so that noises are reducible.
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