I bake my tires off.
Heat oven to 350. When burner/element shuts off put tires in oven. After about 15 minutes pull them out. Using gloves seperate the tire from the rim. If some areas are still bonded repete procces. Don't know if some of the newer molded foams can handle that much heat but the older cut foams actually come out good as new.
NOTE: If your wing or another plastic part is deformed, you can also place it in the oven and it will return to it's original shape. Boiling them also works.