I have seen a few people use ether and the like to seat tyres. Tyre fitters over-inflate tyres up to 80-90 lbs to seat the bead. They then air it down to the recommended pressure.
Using flame to seat the bead could potentially exceed the tyres designed pressure and cause internal problems with the steel belts and sidewalls, couldn't it?
Can the by-products of the burnt fuel cause perishing to the inner surface of the tyre?
https://www.youtube.com/watch?v=QbHpjttWrEA
Is it a safe practice or just a dangerous, lazy man's method?