As always Pete, a fountain of information
I suppose I'm only using non run flats for a the winter months anyway.
I got them from a company called 'selecta tyre'. http://www.selectatyre.co.uk
Mate of a mate so I got a good discount, I think, because I didn't shop around so nothing to compare to apart from the price from BMW.
TSW Mugello rims, Yokohama winter tyres, not sure which (the non rfts
) . Filled it with nitrogen too. They had some nicer rims on display, I would've preferred straight spoke and maybe gun metal grey. But I'm happy, looks mean.
£1200 all in.