How to reuse the old wheel
#16

I've had the best luck putting tires in the oven. I'm really shocked that more people don't do it. It's sooooo simple, and there's no mess and no toxic fumes. Simply preheat the oven to 350, put the tires in, immediately you can turn the oven off. Wait 15 minutes or so and take them out. By now they've cooled a bit so any glove or rag is enough, and the tires will easily crack right off the rims. The rim, tire, and foam can all be reused if you want. I personally let the tires cool for another 15 minutes after coming out of the oven. When they're hot they tear very easily and it's much easier to warp the wheels.
#17

check the link below and look at post 13
http://rctech.net/forum/showthread.php?t=152054
hope this helps
http://rctech.net/forum/showthread.php?t=152054
hope this helps