I'm guessing that the handling of your truck prompted this post. It's a simple thing, but most essential. all you have to do is use an ]x-acto knife on the inside glue bead. use your fingers to pull the tire away from the rim, and stick your x-acto knife in there and cut it off. jam a foam insert in and glue the outside bead back to the rim
Or you could boil the rims and tires and pull the tire off and start over. I don't know how well this works?