I DON'T drive X5, I drive a e38. I just want to know what are the best upgrades in you opinion that i can by at BMW. Only OEM like the running boards, grills, lighting; clear corners, taillights, side lights and ect. Can you put the newest taillights on all X5's? Do a lot of people do the face lifts on X5 or are the areo kits in demand? Would people like to upgrade the wood trim? If so do you buy aftermarket or OEM. I know all the goods on the audio, nav and video upgrades.