^ Thanks - great explanation of the different spacer types. I always wondered what those acronyms stood for...
just now found this site - it gives you every wheel bolt pattern/size for every brand...
http://www.sfxperformance.com/articles/461
Looking at it, the bolt diameter is all the same (That's what i was worried about). The length would obviously be different...
Unfortunately in my case the spacer is DR so it comes with its own bolts that i think would be too short for my X5. If it was DRA - should not have been a problem then...