I have an '03 530i with 130K miles. I'm thinking that I may need new shocks. Have any of you had yours replaced and if so what clued you in that they needed changing?
Push down on each corner, and see if the shocks are damping the springs. If shocks are completely blown, the car will just bounce. Shocks wear though, so such a curbside test is hardly definitive. If you can feel the wheel bouncing when driving after hitting bumps, shocks may be needed. @ 130k, you might be due for other front end suspension pieces too - control arms, ball joints, drag links, bushings, etc etc.