Tire with sipes

A tire comprising a circumferential tread portion having

• two axially opposite circumferential shoulder regions,
• a circumferential center region provided axially between the shoulder regions,
• tread blocks arranged in a V-shaped pattern, and
• lateral grooves which extend from a respective shoulder region to the circumferential center region,
• wherein a plurality of the tread blocks comprise one or more of chamfered leading edges and chamfered trailing edges,
• wherein for a plurality of the tread blocks, each tread block comprises a first sipe extending in a lateral direction and a second sipe extending transversally to the first sipe,
• wherein at least one of the tread blocks comprising the second sipe comprises a notch at a transversal end of the second sipe at one of the chamfered leading edges and chamfered trailing edges, wherein the notch is laterally broader and radially deeper than the second sipe,
• wherein at least one of the tread blocks comprises at least one laterally elongated sipe having a pair of laterally extending opposite sidewalls, and wherein a first sidewall of the pair of sidewalls optionally comprises a bump stop protruding into the sipe towards an opposite sidewall of the pair of sidewalls and extending at least partially along a radial height of the laterally elongated sipe, and
• wherein the tread portion further comprises transversal grooves, which extend transversally to the lateral grooves and delimit laterally adjacent tread blocks, wherein at least one transversal groove of the transversal grooves comprises i) a zig-zag portion extending along the transversal groove, and ii) a transversally extending bottom portion, which is provided radially below the zig-zag portion, and wherein a lateral width of the transversal groove is larger in the bottom portion than in the zig-zag portion.