I have found out that the wheel nuts fitted to the Aero 8 series 4 and 5 are, M14 with a thread pitch of 2mm. If this is any help as I am trying to obtain some for my Aero.
Same as for a Ford Transit...
They come in 2 lengths and different cone angles, so it is important to match.
The nuts on Tarka are closed end, with a 25mm threaded portion and a 45 degree cone.
There is "just" enough space to fit a 19mm socket over the nut, an overall O/D of 17mm. the hole in the wheel is 30mm.
Last time I looked all the locking wheel nuts had a diameter of over 30mm, so wouldn't fit into the wheel.
I'll have another look in Halfords and see what they have.
