| 摘要 |
The tyre which may be used as a control tyre for calibrating tyre testing equipment, comprises a pair of annular beads (40), at least one carcass ply (15) wrapped around the beads, belt reinforcement (13,14,16) disposed over the at least one carcass ply in a crown area, a tread (12) disposed over the belt reinforcement, and sidewalls (18) disposed between the tread (12) and the beads (40). The tyre is made with a tread (12) having no grooves or sipes, and which comprises a radial medium truck tyre retreading compound. The belt reinforcement (17,17a,17b) is laid up in the circumference with a low angle, i.e. up to 0.75{ with respect to the equatorial plane (EP) in the second belt (14), and up to 0.5{ with respect to the EP in the first belt (13,16). |
