Tyre for a vehicle, with a nominal width at least equal to 245 mm, comprising: • a tread, • a crown reinforcement radially on the inside of the tread and comprising a working reinforcement, • the working reinforcement comprising at least two working layers (41, 42), each working layer (41, 42) having a linear breaking strength Rct, each working layer (41, 42) comprising metal reinforcing elements (411, 421), • the metal reinforcing elements (411, 421) of the working layers (41, 42) comprising individual metal threads or monofilaments, • a single carcass layer that is radially on the inside of the crown reinforcement and connects together two beads that are intended to come into contact with a rim and comprise textile reinforcing elements, the carcass layer having a linear breaking strength Rcc, • the carcass layer having surface breaking energy Erc defined by Erc=(Rcc*Acc)/2, Rcc being the linear breaking strength of the carcass layer, Acc being the elongation at break of the textile reinforcing elements of the carcass layer, • the linear breaking strength of a layer Rc being defined by Rc=Fr*d, where Fr is the tensile breaking force of the reinforcing elements of the layer in question, and d is the density of the reinforcing elements of the layer in question, measured around the radially outermost point of the layer in question and corresponding to the mean number of reinforcing elements over a 10 cm width of the layer in question, this width being measured perpendicularly to the direction of the reinforcing elements of the layer in question, the breaking strength and elongation at break measurements are carried out under traction according to the standard ISO 6892 of 1984 for steel reinforcing elements, characterized in that the linear breaking strength Rct of each working layer (41, 42) is at least equal to 300 daN/cm and at most equal to 400 daN/cm, and in that the surface breaking energy Erc of the carcass layer is at least equal to 2.2 J/cm 2. • a tread, • a crown reinforcement radially on the inside of the tread and comprising a working reinforcement, • the working reinforcement comprising at least two working layers (41, 42), each working layer (41, 42) having a linear breaking strength Rct, each working layer (41, 42) comprising metal reinforcing elements (411, 421), • the metal reinforcing elements (411, 421) of the working layers (41, 42) comprising individual metal threads or monofilaments, • a single carcass layer that is radially on the inside of the crown reinforcement and connects together two beads that are intended to come into contact with a rim and comprise textile reinforcing elements, the carcass layer having a linear breaking strength Rcc, • the carcass layer having surface breaking energy Erc defined by Erc=(Rcc*Acc)/2, Rcc being the linear breaking strength of the carcass layer, Acc being the elongation at break of the textile reinforcing elements of the carcass layer, • the linear breaking strength of a layer Rc being defined by Rc=Fr*d, where Fr is the tensile breaking force of the reinforcing elements of the layer in question, and d is the density of the reinforcing elements of the layer in question, measured around the radially outermost point of the layer in question and corresponding to the mean number of reinforcing elements over a 10 cm width of the layer in question, this width being measured perpendicularly to the direction of the reinforcing elements of the layer in question, the breaking strength and elongation at break measurements are carried out under traction according to the standard ISO 6892 of 1984 for steel reinforcing elements,