I have been lurking for a while and now eventually decided to participate. I have purchased a 2004 2.2 and I love it. Went to look at a 2005 x3 but after taking the x3 for a test drive I saw the z4 and fell in love with it
After a quick test drive I bought it and talked my wife into having the x3 as the family car. (Midlife crises). Will post some photos when I get time to stop diving it and take some. 

