this is the best way that i have found to get tyres off the rims....

Preheat your oven to 400 - 450 F, TURN IT OFF!!! Then place your tires/wheels in the oven and let set for about 45 minutes. As the oven cools, it crystalized the CA and you can simply POP the tires off of the wheels. No the tires won't melt and the rims won't either. I didn't believe it at first either but it works beyond your expectations. CAUTION: Use oven mitts when you take the tires out of the oven unless you let it cool right down. The key is 400 - 450 F, TURN OFF THE OVEN, place wheels/tires in oven for 45 minutes and WALLA! Try it!

Leave your window open because the place smells like rubber while your doing this lol. regards, adrian