Well I have had a loaner for a week (Toyota Camry from a rental car company since they were out of loaners) and there is currently no ETA for the radiator. My guess is they will have to start pulling them from the assembly line because that is a very large number of radiators that have failed. My X5 is a 2007 (December 2006 build) so it is very early production. I have had many issues with it, including: transimission line leak, water in taillight, issue with sunroof, need to reprogram PROGMAN 3 times, short in driver side door that caused the door open chime to never go off, etc. Problem is I really like how the X5 drives but am turning sour on the whole BMW brand. I have an Audi A8L that has had 2 issues in 50k miles and and Audi R8 which is bulletproof (and georgeous to boot!). Audi is just building better cars/trucks and their interior is superior to BMW (this coming from an owner of both and I have had the 7 series as well). This may be my last BMW...