Recently acquired a 57 Chevy 1/2 short bed NAPCO. It had 15X10 wheels and 12.5 Mudders which had been on since at least the 80s. The tire were well past their replace date and our local county had an amnesty on dropping off tires so I took them to a local tire dealer and asked if they could remove the tires from the wheels and if not I'd cut them off. Several hours later I got a call they could break the bead (they had tried and broke a chunk of the wheel off in their attempt). I picked them back up and craved off the tires with my sawzall. Now am looking for anything that will chemically break the bead but not eat the alloy wheel in the process.