[{OF}Barney_B]

The ether trick does work but you need to be careful not to use too much. The first time I saw someone do it, I about busted a gut laughing. Reminded me of my teenage years...doing really stupid $hit and somehow surviving.

I've also tried what BD suggested but used a wide ratchet strap...it could also prove to be a dangerous undertaking. It's my guess that your air supply doesn't have the sustainable volume to seat the bead. Another thought; I've seen people use pressure gun grease instead of soapy water on really big tires with fairly good sucess. Not sure if it damages the tires but once you get it seated you can always degrease it. Just some ideas.