FWIW there are two tires that went on too easy, and both ended up burping. One was the Hutchinson Sector 28, which left me stranded for an hour in the middle of a national forest with no cell coverage (group ride, so I got picked up).
The other was the Zipp Tangente RT-25, and I was a bit concerned about it here:
4 months after writing that the front tire burped at low speed (thankfully) and I went down injuring my thumb (not so good).
Whatever you do, if the tire goes on too easy then don’t hesitate to either:
- only run with tube
- get rid of the tire
Simply not worth it running tires that are too large for the rims, or if you want, rims that are too small for the tire.
I’m a little nervous about the Pirellis currently on the bike given my experience with Hutchinson manufacturing. This weekend I’m taking them off, and before patching I’ll put them back on and if they easily slide on they are going straight to the trash bin.
The lack of standards makes road tubeless a game of Russian Roulette 
and its not worth gambling with your safety.