Abstract: A TBR pneumatic tyre comprising a carcass, a tread and at least one “high elongation belt” formed from a single cord with a laying angle ? of between 0.03° and 0.1° and comprising an axial extension CW wherein the ratio thereof to the axial extension of said tread (TW/CW) is between 1.1 and 1.4. The tread is made of a rubber compound comprising a cross-linkable unsaturated chain polymeric base comprising at least 50% by weight of natural rubber (NR), a mixture of fillers comprising (a) a carbon black having a surface area of between 99 and 170 m2/g and with a structure of greater than 120 cc/100 g, (b) a first silica having a surface area of less than 100 m2/g, and (c) a second silica having a surface area of more than 190 m2/g.

Abstract: The present invention relates to a tyre (1) comprising:—a carcass (5);—at least one high elongation belt (1, 2, 3, 4), being applied as a single cord externally to said carcass (5); and—an external tread portion (6), provided with two or more grooves (7) extending according to a circumferential direction (L) around said tread portion (6), wherein the axial width (Wg) of at least one of said grooves (7), measured according to an axial direction (A) parallel to an axis of rotation (R) of said tyre (10) and orthogonal to said circumferential direction (L), is at most equal to 2 millimeters.