No, I am not in the US. I use BMW CA's numbers, in kg.

As I said in my earlier post, it is all theoretical at this point. The weights are different due to the different options each marketing organization puts into the build. Essentially, the X6 isn't any lighter than the X5, so the performance will be the same.

With the M6, BMW had to use carbon and other items to reduce the weight. Maybe they will do the same with the X6. They could make it a two-seater for example

All joking aside, we really don't know at this time. And I do think that the suspension from the X6 will make it into the X5 in similar versions.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue