The ornamental design for a tyre tread, as shown and described.
1. Tyre tread
1.1 : Front
1.2 : Left
1.3 : Enlarged
1.4 : Right
1.5 : Perspective
In the drawings, the broken lines defining the sidewall, inner bead and the peripheral boundary between the claimed tire tread and the unclaimed sidewall depict environmental subject matter that forms no part of the claimed design.