I use an old toaster oven to removed glued tires. That way I don’t have to worry about messing up the wife’s oven and it help to keep me out of trouble. There may also be a little smoke. Also have a pair of gloves handy to handle the tires when hot.

Pre-heat oven to 325.
Cover a cookie sheet with tin foil.
Bake tires for 20 mins.
Remove from oven
Quickly break the bead surface of the side that is facing up.
Place tires back in the oven for 5 mins with the other side facing up.
Remove from oven and completely remove tire from wheel.

From Harley Designs