-I've heard that baking the tires works, but that makes a smelly mess. I know that this does work but I don't know of the best way to do so.
-There are chemicals that will work, but they also eat the foam insert. The wrong chemicals will also soften the tire or wheel or even melt plastic.
-I've also heard that freezing the tires makes the super glue very brittle and you can get the tires off that way too. Don't know of anyone who has tried this.
Unless the wheels are unique or you can't find replacements, the easiest way sometimes is just to buy new wheels. No matter what removal process you use, make sure to wear goggles, rubber gloves, and a mask if you are dealing with harsh chemicals or hot materials.
You might search on a dedicated off-road forum such as rc10b4.com as I'm sure this question has been asked multiple times or the offroad forums here on hobbytalk.
I have used the boiling technique once and the oven technique once. I always fall back to letting them soak in acetone (available by the gallon from the paint section of Home Depot).
Acetone will soften and swell the foam liners but if you are careful not to tear them when they are in that condition, they come back to size and shapen when they dry. The acetone does, however make the Trinity blue foam liners less firm than when new even after they dry completely.
I have never had acetone damage a tire or wheel manuafactured in the last 5 years though it will remove chrome.
Acetone is very volatile so you must be careful not to use it near a source of ignition. It can pop the lit off many plastic containers (I use Tupperware) so a weight on the lid is a good idea.
This is a VERY flamable liquid. The fumes are also VERY strong. Please be careful!!!!
Put the container you are using OUTSIDE somewhere safe that kids or animals can not get into. Somewhere well ventilated.
I don't think you have to be that worried. I used to keep the container outside on my porch and that is when I found out about the actone popping the lid off the container. What I do now is use old tupperware containers and to keep the lid from being popped off I put a steel plate on top. These are the steel plates that railroad ties are laid on. I found some besides some railroad track that was being removed. With the metal plates on the lids, the fumes don't get out.
As far as the fumes being strong, that depends on your nose. I've been using this stuff for years and didn't think much of the smell. Two weeks ago I had the flu and the smell seemed stronger but now that the flu is gone it is just like before.
1) Acetone is the main ingredient in nail polish remover. Women use this all the time and don't catch fire or faint from the fumes. In fact, before I found out about being able to get it at home depot, I bought a bottle from a local cosmetics store.
2) In many chemical labs (including my college chemistry lab) acetone is used in a spray bottle to dry glassware after it is washed. The acetone mixes with the water, runs off, and the remainder evaporates very quickly. People don't die from this and no one worries about the smell. They just keep it away from the nearest bunsen burner.
As far as it "just being glue", so is epoxy, but you need some really dangerous stuff to dissolve epoxy. Acetone to remove CA is nothing compared to what it takes to remove epoxy.
I would try boiling them. I have done this for years and it works well. The longer they boil, the better they come off the rim. Once in awhile, I have to cut off a little of the tire that might be let on the rim, but is easy to remove.
I have found a 100% reliable method, that uses no dangerous chemicals, no messy boiling, no wife yelling because you are baking your car parts in her clean oven, and no chance of doing it wrong. I does cost about $5.00 to do a pair though.