TIRE HAVING MULTILEVEL SONIC WEAR INDICATORS

摘要

The invention relates to a tire (10) including two sets (E1E2) of sonic wear indicators (TUS1-TUS2) corresponding to two wear thresholds so as to generate noise when each threshold is exceeded. Each indicator (TUS1-TUS2) of each set (E1E2) is axially aligned with each of the other indicators (TUS1TUS2) of the set (E1E2). The number of set(s) (E1E2) of indicator(s) associated with each threshold is different from the number of set(s) of indicator(s) associated with each of the other thresholds. The sets (E1E2) of threshold(s) (TUS1TUS2) associated with each threshold are equidistantly circumferentially distributed over the tire (10). Each indicator is made of a rubber projection extending from the bottom of a circumferential groove.