I had tried gettin acetone but couldn't get any near me. boiling also didn't work so I was getting frustrated. Then I read about baking them and gave it a bash on Thursday and it worked so well I was shocked.
150c for 10mins and then holding the wheels with mits they basically just peeled off, with no damage to rim/tyre/foam. It was literally the easiest thing I've ever done with RC stuff.
obvs if you do try this make sure you take the correct precautions in saftey and permission