They are almost like new, has a winter tyres 250/45 on and about 6-7mm thread. these are 5x120, et45 and 76mm bore, but centre bore is not bwm, so will supply a spigot rings. had them on my car for couple of weeks or so, while my wheels was to refurbishers. bought from ebay for £150 and fed up to have them in garage so £100 or best offer. these will fit not only z4, but any car with hub diameter up to 76mm. i will supply spigot rings 72.6 to 76. these rings a cheap as dirt, you can get a set of ebay for a fiver if you require different size.
So, £100 or best offer, collected from cv7.