Originally Posted by
crash1
do not soak them, put them in a sealed container with acetone in the bottom, put some blocks in the bottom to sit your tires on. it is the fumes that will do the job not the liquid

give them a day or two and off they come
+1 by far my favorite method. It may take longer but it saves both rim and tire. If the tire is trash I cut the tire, remove the foam, and toss the whole thing right in the acetone.