Just returned from a skiing trip to the Alps and saw an F25 parked at the side of the road with E83 Style 143 and winter tyres. Obviously I couldn't tell whether it had spacers or not.
When you say the calipers - do you mean the wheel isn't big enough(diameter problem - e.g. 17s won't fit a 35d but 18s will) or the spokes are catching(offset problem)?
X3 3.0d M-Sport
Mini Cooper S