| 摘要 |
A tyre for heavy goods vehicle comprising a tread with a thickness E having a tread surface, an asymmetrical sculpture design over at least one thickness equal to 30% of the thickness of the tread, forming an outer portion of axial width LE to be positioned axially towards the outside of a vehicle when the tyre is fitted and an inner portion of axial width LI situated in the axial extension of the outer portion, the inner portion and the outer portion separated by a groove of generally circumferential orientation, the outer portion of the tread comprising, in the circumferential direction, a succession of rigid strips of circumferential width D11 and of axial width LE having no groove or cavity opening onto the tread surface in the new state and of flexible strips of circumferential width D12 and of axial width LE provided with grooves extending over the whole circumferential width D12 of these flexible strips, the rigid strips having a circumferential width D11 at least equal to 7% of the axial width LE of the outer portion.
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