| 摘要 |
Tyre for motor-vehicles provided with a tread pattern wear indicator, where the tyre tread is formed by pattern parts in the form of circumferential ribs and/or in the form of blocks and contains at least one circumferential groove, wherein the indicator is arranged in the surface part of the pattern in the circumferential ribs or blocks, which are in contact with the road surface, and is in the form of sipes running radially into tyre tread, while the greatest depth of the indicator sipes is smaller than the depth (H) of the circumferential groove. The tread pattern wear indicator (3) consists of seven radial sipes of three different depths, created and arranged so that they form the Arabic numeral 8 in segment depiction. One of the above radial sipes has the smallest depth and in a horizontal section by a plane running through the bottom of the sipe in parallel with the tread surface the other 6 sipes are arranged into the Arabic numeral 6 in segment depiction, which is visible at a certain degree of tyre wear, and three further sipes having the greatest depth of the above seven are arranged into the Arabic numeral 4, which is formed in the bottom plane of the three remaining sipes having the middle depth. |
