At the risk of repeating myself repeating myself, I would point out that if you are in the USA, you do not have an X3 M-sport.
The X3s with sport package have quite a bit of the M sport package, but not quite the whole thing. The M sport package (not sold in the USA) includes staggered wheels and tires (front the same as the US sizes of 18s or 19s, but rear wider) and the anthracite headliner.
The X3s with sport package have quite a bit of the M sport package, but not quite the whole thing. The M sport package (not sold in the USA) includes staggered wheels and tires (front the same as the US sizes of 18s or 19s, but rear wider) and the anthracite headliner.