It's been a while, but I thought under normal driving conditions (like highway cruising), the bias was 10/90, but maybe it's 30/70 front/rear. I've heard, but can't confirm that it can go up to 60/40. When locked, it's 50/50.
If we're talking pipedreams, the inline 6 turbodiesel from the x5 would be incredible, mated to an 8-speed. They get ~30 mpg highway, with 255 hp and 413 ft/lb, and more or less the same curb weight as a LE.
There is a 10 page thread on this in general discussion.
Read this..
ETA: Carmaker1's comment, second on the page, pretty much spells it out.
ETA 2: and I guess the mods nuked the thread..
This isn't the first time I've heard this, which is surprising because the KO2 carries the severe weather mountain/snowflake symbol (not just M+S rating).
If they're HID driving lights, they're no longer accessory lights.
ETA: I'm not saying I care what you do, just informing you, to the best of my knowledge.
It's not like people don't know this - it's parroted in the news every Spring, in one fashion or another. Even if it doesn't help, it's not going to hurt anything.
With the added benefit of insulating your beverages.
OP: at the 5k service interval, the dealer will probably just check your fluids and send you on your way.