michaelgroves
Explorer
There have been discussions of this topic fairly recently on Benzworld and Pirate. The method I use for 395/85R20s:
Place a 20" bicycle tube between outer bead and rim flange, inflate till contact made between bead and flange. Tire should not be touching ground - best on hub in the air, or on a cylindrical stand. Make sure bike tube is lubricated with straight detergent. Then inflate tire to 3-4 psi and rapidly pull bike tube out, preferably while passing air into tire rapidly. Bead should seat.
I've done it successfully twice.
This avoids the neccesity for rapid, poorly controlled redox reactions. The pressure wave from a blast incidentally might not be good for a CTIS system.
Charlie
This sounds like a much better solution. However, it does mean you need a bicycle tube the same diameter as the wheel rim.
I don't know much about CTIS, but I shouldn't imagine the pressure wave from an ether/propane/gasoline burn would be much of a problem - no more than going over a sharp bump when running low pressure tyres, surely? Put it this way - what do you imagine the maximum pressure reaches when the stuff ignites?