Tyre for a vehicle, comprising: • a tread intended to come into contact with the ground via a tread surface, radially on the outside of a crown reinforcement, said crown reinforcement comprising at least one crown layer comprising reinforcing elements, • the tread having a central part and two axially outer parts, the central part being of an axial width equal to 90% of the axial width L of the tread, this central part comprising at least two rubber compounds (221, 222), these two rubber compounds making up at least 90% of the volume of the central part of the tread, • the first rubber compound being radially on the outside of the second rubber compound and the first rubber compound making up at least 40% and at most 60% of the volume of the central part of the tread, • characterized in that the second rubber compound has a Shore hardness DS2 at least equal to 5 plus the Shore hardness DS1 of the first rubber compound, each Shore hardness DS1, DS2 being measured at 23°C in accordance with standard ASTM 2240-15e1, • in that the second rubber compound has a secant extension modulus MA300_2 at 300% deformation, measured at 23°C in accordance with standard ASTM D 412-16, at least equal to 0.75 times the secant extension modulus MA300_1 at 300% deformation of the first rubber compound and at most equal to 1.25 times the secant extension modulus MA300_1 at 300% deformation of the first rubber compound, • in that the second rubber compound has a dynamic loss tanD0_2, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 0°C at 10 Hz, at least equal to the dynamic loss tanD0_1 of the first rubber compound, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 0°C at 10 Hz, et • in that the dynamic loss tanD23_1 of the first rubber compound, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 23°C at 10 Hz, is at most equal to the dynamic loss tanD23_2 of the second rubber compound, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 23°C at 10 Hz, et • in that said first and second rubber compounds (221, 222) comprise a silica filler at least equal to 100 parts per hundred rubber and the dynamic losses tanD0_1 and tanD0_2 of which, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 0°C at 10 Hz, are at least equal to 0.7. • a tread intended to come into contact with the ground via a tread surface, radially on the outside of a crown reinforcement, said crown reinforcement comprising at least one crown layer comprising reinforcing elements, • the tread having a central part and two axially outer parts, the central part being of an axial width equal to 90% of the axial width L of the tread, this central part comprising at least two rubber compounds (221, 222), these two rubber compounds making up at least 90% of the volume of the central part of the tread, • the first rubber compound being radially on the outside of the second rubber compound and the first rubber compound making up at least 40% and at most 60% of the volume of the central part of the tread, • characterized in that the second rubber compound has a Shore hardness DS2 at least equal to 5 plus the Shore hardness DS1 of the first rubber compound, each Shore hardness DS1, DS2 being measured at 23°C in accordance with standard ASTM 2240-15e1, • in that the second rubber compound has a secant extension modulus MA300_2 at 300% deformation, measured at 23°C in accordance with standard ASTM D 412-16, at least equal to 0.75 times the secant extension modulus MA300_1 at 300% deformation of the first rubber compound and at most equal to 1.25 times the secant extension modulus MA300_1 at 300% deformation of the first rubber compound, • in that the second rubber compound has a dynamic loss tanD0_2, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 0°C at 10 Hz, at least equal to the dynamic loss tanD0_1 of the first rubber compound, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 0°C at 10 Hz, et • in that the dynamic loss tanD23_1 of the first rubber compound, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 23°C at 10 Hz, is at most equal to the dynamic loss tanD23_2 of the second rubber compound, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 23°C at 10 Hz, et • in that said first and second rubber compounds (221, 222) comprise a silica filler at least equal to 100 parts per hundred rubber and the dynamic losses tanD0_1 and tanD0_2 of which, measured in accordance with standard ASTM D 5992 - 96, at a temperature of 0°C at 10 Hz, are at least equal to 0.7.