Mould for making a wear indicator into a pneumatic tyre and a pneumatic tyre comprising a wear indicator

A tyre, which is in use configured to roll about an axis of rotation, the tyre comprising

• a tread arranged, in use, to make a rolling contact with a surface,
• the tread defining a wear indicator extending from the outer surface of the tread into the tread,
• the wear indicator defining at least seven blind holes extending from the outer surface of the tread into the tread in a radial direction perpendicular to the axis of rotation, wherein the blind holes are such shaped that
• multiple distances are left in between pairs of cross sections of the blind holes in a cross-sectional plane at a depth position, wherein
• the cross-sections of the blind holes lie on the cross-sectional plane having surface normal parallel to the radial direction and intersecting with at least some of the blind holes and
• a minimum of the multiple distances is at least 0.5 mm;
• and
• in the radial direction, the cross section and/or the depth of at least some of the blind holes varies in such a way, that at a number of different depth positions, the cross sections of the blind holes at those depth positions define that number of different symbols expressible by the wear indicator, one symbol corresponding to one depth position, the number of different depth positions and different symbols being at least two.