Maybe? I can't see them stretching much like that though, as once the bead is over the rim it will happily go back to it's natural size. Plus I don't have a spare set of wheels to test that out on sadly.
The bead will stretch and become easier to get on and off once left on the rim and inflated for a while. I had this same issue with Challenge Paris Roubaix, at first near impossible to get on the rims.
Maybe? I can't see them stretching much like that though, as once the bead is over the rim it will happily go back to it's natural size. Plus I don't have a spare set of wheels to test that out on sadly.