2 ways you can tell,

1. there is a section here that tells you the features you have if you have or not
2. The sport tires are the bigger ones (as mentioned above) and they are the star shaped ones and the tires are a bit wider (not as wide as the ones on the E70) AND you have the clear signal indicators on the front and rear lamps

__________________
2003 BMW X5 Sport pkg, DSP, cold weather package, xenons
2003-2013 (Total loss as a result of accident) 109k miles at time of accident