Depends on the tire, the glue, and how you remove em. Sometimes the bead will stay intact...other times it will rip apart at stubborn points. normally the reason for removing tires from rims is to replace them with new tires and keep the old foams/wheels.
It's worth a shot, but just be careful. A better method might be to use Acetone in a bucket and hang the wheel above the acetone and seal the bucket. the fumes will eat the glue without doing much damage to the tire itself. Baking can work as well, but trying to pull a hot tire off tends to not be so subtle ;-)