Pace-car, I followed your advice and put tubes in. It was a chore but but all worked out well. Aired them up slowly, beads popped and tires are good to go.I've dealt with this before on other tires. I put a cheap tire tube in them and air it up slowly. Putting them in the sun or in front of a heat source usually does the trick. Please refrain from using ether (starting fluid) and a match to get it to mount. Hope this helps. Jim.