Hi. Do you know what car they are from? The offset (et) is fine, its the same as 172 cup turini's, but not exactly "right" - but then its not necessarilly a case of right and wrong and will depend on what you want really.
For them to physically mount right you need to know the PCD (pitch centre diameter) of the four mounting holes, and centre bore diameter are exactly right for the clio - 100mm and 60.1mm from a quick search.
Then its a case of actual wheel size, in which case just as with offset there isn't exactly a right and wrong.