Also, FWIW, we bought an extended warranty 7/70 for less than $1,300 bucks from Fidelity which I belive writes a lot of Lexus' waraanty programs. We bought the non BMW for 2 reasons:
1. Price was about a 3rd as much
2. Covers gaskets/seals which the BMW warranty does not. Was told that can be a pain and costly should you need them done.
Cheap peace of mind even though I bet we will not go beyond 3 years as she likes a new one every few years. We have had ours now for just about 7 months and 4,500 miles and my wife LOVES this car. She has never said that before with any other car.
Anyway, best of luck in your search!