I recently sold my 2004 Crossfire. I had picked up a spare in case my daughter had a flat. The spare is new with very little wear. I checked to verify that it would fit and the only issue was when it turned all the way in one direction it would rub the inner fenderwell in front slightly. There were no issues in the back. I kept the spare in the car all of the time. Looks like a new spare. It is the same as shown in the link below. Let me know if there is any interest. Asking $100.

Tire Info: Continential Sport Contact, 235/45 R17 94W
Wheel: 7 1/2Jx17H2 ET37, A210 401 18 02

MERCEDES CLK430 W210 E320 E430 E55 SPARE TIRE WHEEL 17": eBay Motors (item 230534444582 end time Nov-03-10 19:59:09 PDT)