alpac, I found one problem here. The tightening torque of the nuts required by TIS is 100 Nm for frame side and 80 Nm for rotor side. I just tightened the nets to the specified torque when the car was jacked up. In TIS, it say 'tighten in empty weight or normal weight' which means the car should be grounded. Is there any problem if I just tighten the nuts when the car is not grounded? Thanks for help.

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--2004 E53 X5 4.8is - ECE version; right hand drive; Located in Hong Kong; ext. black sapphire metallic; int. leather black; adaptive dynamic bi-xenon headlights; 16:9 onboard monitor w/o navigation; 20" genuine BMW Y-spoke 214 wheels with Bridgestone Dueler H/P Sport tires; Int. rear view mirror w/ compass.