newbie needs some advice

[andrewaaronstclair]

i am new here and was wondering if anyone would have any advice for me. i have a 2007 X5 4.8i with the sport package and it has had quite a few annoying problems popping up all the time i think i have spent almost as much time in the 323 courtesy car as i have in my truck. today though came a problem a bit more serious.

i pull out of my driveway to hear a click click BOOM followed by the sound of metal bits and gears falling onto the ground. i found out that a bearing inside the rear differential has come apart allowing the diff to go sideways inside the houseing wich split it in two and the forced the differential housing apart and shattering it. the car has 81,000km's (50k miles) and it is 1000 km;s off warranty it ran out a few days ago.

getting to my question i am new to bmw and was wondering if anyone know if there is a way for warranty to take care of this since it is so close to when it came off. if not them my second question would be does anyone know where i can source a cheap replacement to get the car rolling again so i can trade it in on an X5M. although i am starting to wonder if that will be a nicer faster headache lol.

any information would be appreciated