[Ducvet]

Is a tube possible?
The stem needs to have a large enough hole as tube stems are thick but dirt bikes still use them.

Have they ever had Mousse tubes for atv's?
A foam liner that naturally is 11-13psi but I would be surprised if they could not come up with a softer one, no more flats and puncture sidewall damage should be a non-issue. given the long lifespan of some of these tires It might be a good match if they have them.

 

[Ducvet]

Mushroom style patches otherwise called patch plugs are done from the inside for a few reasons NORMALLY.

1. the patches are not designed to be used on sidewalls and if in the tread area you would rip it off when riding.

2. The inner tire is a safer place to put a patch as it can be bonded there normally as a smoother surface

3. As mentioned you have positive air pressure inside pushing the patch into the hole helping to hold it in place vs internal air inside pushing the patch out of the hole

Since there are not designed for sidewalls and this may be a temporary fix anyway all bets are off and you do what you have to do. I would look at it as a short term fix can be quick and dirty repair where if I am hoping for longer term success I would used the best method that give the best chance of it happening.

 

[Ducvet]

They are not hard to do yourself so I would consider that. If PAYING someone to do it it may change the equation at that point I would likely replace it as the removal and install could cost you more than it is worth. Doing it yourself with free labor changes that so I would check prices for you doing it vs someone else if they get anywhere near the cost of a replacement tire I would not have them patch it .

Some things make sense to pay a pro to do others not so much this may be one of those.