Hi Radio Flyer,
If your car is automatic, the center clutch pack may be siezed. This happened once on my friends 97 Outback LTD and Subaru replaced it under warranty.
One of the causes for failure is too much difference in tire diameters between the front and the rear tires. I warned him, cheap b-terd, used a mix of tires same size, but not the same brand.
Hope this helps.