run over the tire with your car. just don't run over the rim. push the tire against your car tire lining it up so the car will run over the tire as close to the rim as possible. you may have to rotate it an run over from a few different spots. if that doesn't work, you may need a vehicle with straighter sidewalls...I had one that wouln't come off with my wifes explorer, but as soon as i ran over with my 3/4 ton truck with less flex in the sidewall, it popped off
im going to try that because this thing is on tight, its like the guy who put it on just took a whole bucket and globed it on there lol.