I'd give the folks over at Tire Rack a call. They sell winter tire packages with steel wheels, so I'm sure they can set you up with a single tire/wheel combo.
If you prefer to mount to a Volvo alloy wheel, I'd go to a junkyard (George mentioned two above) and track down a tire/wheel or two.
-ema
If you prefer to mount to a Volvo alloy wheel, I'd go to a junkyard (George mentioned two above) and track down a tire/wheel or two.
-ema