Hey fellow bimmer bros!!!
Just got my new 2012 BMW x5m!! And I am loving it so far!!!!!
But I have one question! Okay so I already know the fatty is a gas guzzler but I didn't expect it to empty so quickly.

So I filled up the tank on Friday night, and already it has a quarter of the gallon left. Well I heard that its not good for the car to drive if the gallon is below the quarter so basically friends tell me to refuel as soon as fuel goes to a quarter?

Is it really true it's that bad for the car?

How often do u guys refuel?