Richi: I admire your attitude- although not your wheels
) - but that is OK with me - you bought them for yourself. I stick to my 310.
A tip: I believe X4 is somewhat like a coupe on stilts - I will lower mine 35 mm by installing H&R springs - same as for X3- which will transform it to an "ordinary" coupe. There is a picture on H&R homepage. Can be bought cheap from Germany. Installation is expensive though.