Thanks Zmachine I'll keep a note of all that when I go to view one.
I've just come across a 2.2l which is 6 cylinder I believe. Not seen this on Autotrader before so I presume it's newly listed. Any good? Would rather have the 5 spoke alloys but I'm willing to compromise.
http://www.autotrader.co.uk/classified/advert/201304056114990/sort/default/usedcars/model/z4/make/bmw/onesearchad/used/onesearchad/nearlynew/onesearchad/new/quicksearch/true/postcode/le673tj/page/1/radius/1500?logcode=p
2.2l SE
2004 (04 plate)
69,000 miles
Sold with warranty (apparently)
£4,990
No mention of service history or previous damage but I can enquire about that.