hey paul, the winter tires you bought are Style 116. If ever you want to know what style rims you have. Just go to the front of the X5world site and under Body, Wheels & Styling section, that's where all the list of BMW rims ever made.
that's where I go for reference most of the time when i don't know what style it is.
nice looking 168s...but i am more into the subtle look and am not a big fan of the bling so I went with the silver instead of chrome...