These are great size information bits Rab,
I am setting up my suspension on my 3dr project but dont have any wheels / tyres for some time.
Do you know any more overall diameters ? especially for 17 / 18s with different profile tyres.
I am thinking 18" rims as wide as possible will be the rim I will go with. I am trimming 10mm of the wheel arch to allow wider tyres , lowering with coil overs and modifying the trailing arms to be adjustable so I get the right camber, toe in... I know what ride height I desire...

Any help you can give much appreciated...

I need some idea of tyre diameters to know what range of adjustment I will need and where to locate the centre of adjustment.