yeah those are pretty much what i was thinkin about
i remember hearin about these as a way to not have anyair in the tire at all
but these are mostly just a safety thing for when you get a flat
imagine it, never having a flat again?
watchin a baja thing on tv and i got to thinkin
maybe if a bunch of people get together to do a group buy we could get em cheaper?
You can get tires foam filled at almost any heavy duty tire shop, I work at a construction equipment dealer and lots of the skid steer tires get foam filled.
It is that expanding foam, but I would think it would be a very harsh ride.