I have an 02 330xi (since it was born) with just under 60k on it.
Front control arms might be an issue. I replaced mine about 3k miles ago. A while back I had an issue with an A/C hose and a window regulator. I've also replaced the front axles once at about 40k miles. Clutch & slave cylinder was done about 2k miles ago but that is atypical of these cars.
I've also recently replaced the electric fan.
On my short todo list:
1) brakes & rotors (all 4)
2) complete cooling system
3) fuel pump