Plain ol' steel wheels are easy to find for many vehicles - yours included, no doubt. The spare tire is usually mounted on one of them, and the spare wheel WILL fit the vehicle it came on. All ya need to do is find four spares and you're golden. I've found them online for as little as $45 ea.
The spare isn't necessarily the same diameter as the other four: my Canyon has 18" wheels all 'round but a 17" spare. That'll mean you'll need different tires, too, but for me that's not a bad thing. I run highway tires in the summer, Blizzak winter tires during the other 8 months, so I'll get 17" tires come springtime, and then I can wear Moon discs on the truck.
