The other option is to reuse old bolts. I expect many members here to disagree, but I asked few local BMW shops here in Maryland, and all of them just reuse these bolts. I reuse them myself after careful inspection. They assembled without a problem and I hope they will perform well is case of collision. By inspection i meant to check them the same way mechanics check head bolts - using caliper to insure that they were not stretched.

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2012 X5 x35i My new toy
2005 X5 4.4 Her's (Retrofitted Servotronic Steering Rack)
2003 X5 3.0 Mine (Retrofitted Servotronic Steering Rack and Heated Steering Wheel)
2001 M5 Son's car
2000 540i 6sp Sports pkg, supercharged. Son's car (Sold)
2001 530i (Sold)
1999 528i (Sold)
1975 2002 (Sold)