I almost always glue my tires myself. When I do it myself, they don't come off, and I cut a lot of costs here.
In the past three seasons of pro ten racing, and this winter 1/12th scale, I have never gotten a tire that I glued myself come undone.
Here's my tactic:
Get a jar of "Bison Kit" from Gamma (hardware store chain in Holland).
It's a blue and white metal jar with yellow glue inside.
Get some labratory rubber gloves, a simple paintbrush and an old towell.
Brush a thick coat of glue on the outside of the rim and the inside of the donut. Put a piece of paper on the inside of the rim, to suck up excess glue.
Put the rim on the towell and press on the donut. It will "floop" into place. Push through till it's where you want it.
Whipe off the excess glue.
Et Voila!!
Your tire will probably be covered with glue now, but that will come off when yue true it.
I just demonstrated this technique to one off my pro ten racing buddy's and he was astounded by how messy this is, but also how effective!