Both of my quads are down because both have a front flat tire. Each one has a small hole in the sidewall. Will Slime work on sidewalls? Can they be patched from the inside? Can I or do I have to use an inner tube?
Please help me, these tires are fairly new or have a lot of tread life left in them and I don't want to have to replace them if not need to.

 

Use a plug.