The wheel nuts on my P38 have a sort of shiny metal shell on them and after trips to the tyre repair/change place I find this outer casing distorted and my supplied wheel wrench doesn't fit !! I think the tyre people are using the wrong size socket with extreme force which buggers up the hexagonal shape of the nut. Anyone else had this ? Also, I notice that the wheel nuts on my Classic look the same nut - can they be interchanged ?