Originally Posted by
soyabean
There is absolutely no reason why a folded tyre can't be installed immediately from new stock.
I've never heard of letting it "air out" in advance.
Same here. I've never done anything other than mounting the folding tire straight out of the package. It can be a bit onery and needs to be put in its place but it's not that tough to do. I might try the "let sit with an inflated tube" technique next time, unless I'm too impatient.