First and foremost, are you sure that the vehicle HAS a supplied spare wheel anyway ? not such a silly question these days (unfortunately). Do you have a handbook ? if the base vehicle is a Fiat ? have you looked under the L/H cab seat ? in a RHD vehicle, the passenger seat ? it is often stored under there. In my 2012 model in a snazzy large plastic box, in my 1988 Talbot it was still there but just clipped under the seat. Good luck !