Anyone have any diagnostic suggestions for my ’86 560SL?

Recently, my car has started to make a “creaking” noise. The sound appears when, from a stationary position (i.e., at a stop light), you remove your foot from the brake and start to roll forward. The sound disappears once the accelerator pedal is applied and the car accelerates.

To my ears, the sound seems to be emanating from the front suspension, but I’ve no better guess as to the cause.

Any ideas?
Thanks for any suggestions!
Ryan Potts