If you get rid of the 132's, your X still needs tires and wheels. The dealer probably won't give you anything for accessories but if you sell any items, you have to replace it with something. But before that, you need to see if it's worth your time and effort to do it. Most of the time, the answer is no. Just sell it as is and move on. Some people who have done engine mods return the motors etc to stock and sell the pieces. Good luck.

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'03 Carbon Black M5
'04 Silver X5 4.4
'04 MB SL500