- Tyre for a heavy duty vehicle, this tyre comprising a tread having a thickness E of wearable material and a tread surface intended to come into contact with a roadway, this tread having at least one raised element (41, 42), this raised element having a contact face forming part of the tread surface, lateral faces intersecting the contact face along edge corners, each raised element having a height at least equal to the thickness of wearable material, this at least one raised element (41, 42) being provided with a plurality of sipes distributed in the circumferential direction, these sipes being inclined, namely making an angle other than zero degrees with a radial plane perpendicular to the contact face of the raised element (41, 42), these inclined sipes extending through the thickness of the tread and intersecting the contact face of the raised element to form edge corners, these inclined sipes having suitable widths such that they close up at least partially when they enter the contact patch in contact with the roadway, this tyre being characterized in that the material of the tread that is intended to be in contact when new with a roadway and making the outermost layer (Ce) of the tread when new is an elastomer compound based on natural rubber or synthetic polyisoprene with a majority of cis-1,4 linkages and optionally on at least one other diene elastomer, the natural rubber or the synthetic polyisoprene in case of a blend being present in a majority amount relative to the amount of the other diene elastomer(s) used and on a reinforcing filler consisting predominantly of silica, with a content expressed in phr (parts by weight per hundred parts of elastomers) of greater than 40 and an overall filler content expressed in phr of greater than 50, which has the following characteristics: (a) a BET specific surface area of between 200 and 240 and preferably between 210 and 230 m2/g; (b) a CTAB specific surface area of between 180 and 220 and preferably between 190 and 210 m2/g; (c) an average particle size (by mass), denoted dw, of from 45 to 75 nm - this material further having the following physical properties: - a tan(δ)max(G*25%) ratio is at most equal to 0.065, in which tan(δ)max is the measurement, at 60°C, of the loss factor of the material of which the tread is made, and G ∗ 25% is the complex dynamic shear modulus, expressed in MPa, of this material as obtained according to the recommendations of standard ASTM D 5292-96, and - a deformation at break under traction testing that is at least equal to 530%, this value being obtained at a temperature of 60°C according to the recommendations of French standard NF T 46-002. (a) a BET specific surface area of between 200 and 240 and preferably between 210 and 230 m2/g; (b) a CTAB specific surface area of between 180 and 220 and preferably between 190 and 210 m2/g; (c) an average particle size (by mass), denoted dw, of from 45 to 75 nm - this material further having the following physical properties: - a tan(δ)max(G*25%) ratio is at most equal to 0.065, in which tan(δ)max is the measurement, at 60°C, of the loss factor of the material of which the tread is made, and G ∗ 25% is the complex dynamic shear modulus, expressed in MPa, of this material as obtained according to the recommendations of standard ASTM D 5292-96, and - a deformation at break under traction testing that is at least equal to 530%, this value being obtained at a temperature of 60°C according to the recommendations of French standard NF T 46-002. - this material further having the following physical properties: - a tan(δ)max(G*25%) ratio is at most equal to 0.065, in which tan(δ)max is the measurement, at 60°C, of the loss factor of the material of which the tread is made, and G ∗ 25% is the complex dynamic shear modulus, expressed in MPa, of this material as obtained according to the recommendations of standard ASTM D 5292-96, and - a deformation at break under traction testing that is at least equal to 530%, this value being obtained at a temperature of 60°C according to the recommendations of French standard NF T 46-002. - a tan(δ)max(G*25%) ratio is at most equal to 0.065, in which tan(δ)max is the measurement, at 60°C, of the loss factor of the material of which the tread is made, and G ∗ 25% is the complex dynamic shear modulus, expressed in MPa, of this material as obtained according to the recommendations of standard ASTM D 5292-96, and - a deformation at break under traction testing that is at least equal to 530%, this value being obtained at a temperature of 60°C according to the recommendations of French standard NF T 46-002.