Here is a picture
I had already removed a couple zippies when I thought to take a picture, They slip right out, no trouble at all.
This is the front tire that i did first, I used even more zippies on the rear since I had them, the are quick and easy to install and remove, and the brand new rear knobbie has a VERY stiff carcass. The beads did not want to pull together. I think i could ride 100 miles with a flat, no problem.
The package of zippies says on it:
18" Heavy-Duty Cable Ties
5" max diameter
GB (Gardner Bender) brand that I picked up at Lowes electrical department.
There are 15 in this package.
I agree that they would be an excellent addition to the on-board tool kit.
They don't weigh anything and are very handy.
I just put as many on as seemed beneficial. I don't think you could use too many and I don't know what a minimum might be. Enough to keep the two beads together I would say.
I placed my tire tool so that it was bearing against the zippie as it is more slippery than the rubber tire.
No idea if that made a difference or not.
In the picture you can see the zippie I put around the tire and rim to keep it down in the well by the valve,
You can just make out the end of the valve stem with the nut on it.