The combination (10) comprises an inflation valve (12) for a vehicle tyre, and a housing (14; 14A) for a device for measuring the inflation state of the tyre. The valve (12) is insertable through a through hole (15) provided in the wheel rim (16) on which the tyre is mounted. A gasket (18) is interposed between the body (20) of the valve (12) and the wheel rim (16). The body (20) of the valve (12) is laterally threaded on its outside to enable a nut (28) to be screwed thereon to fix the valve (12) to the wheel rim (16). The body (20) terminates internally with a head (22). Within the housing (14; 14A) there is provided a through aperture (26; 26A) through which the body (20) can pass but not the head (22). Between the housing (14; 14A) and the gasket (18) there is interposed an annular counteracting element (30) to ensure the sealing of the gasket (18) when the fixing nut (28) has been tightened. As a consequence of the tightening of the fixing nut (28) the head (22) cooperates with the corresponding part (24) of the inner surface of the housing (14; 14A) to fix the housing (14; 14A) to the body (20) in such a manner as to prevent the housing from coming into contact with the wheel rim (16).