Are you after a Central Tyre Inflation System (CTIS) for your vehicle?
If you are, then there could be an issue with this CTIS as it requires hollow axles. It appears to be a very good system, but there are few vehicles out there with hollow axles.
We have an aftermarket CTIS fitted to our Isuzu truck, it works unbelievably well, designed, and manufactured in Australia.
Unfortunately getting an aftermarket one that could come from the inside, while possible, would take a real lot of money, time and effort. Trust me, I looked long and hard to see if it would be economically possible; it wasn't.
We have external piping which is very tough, far tougher than I thought possible. We have done some very tight tracks where vegetation has been really rubbing, pulling and squashing our external air pipes; not a scratch. Our steel fuel tanks have train lines running horizontally, the piping, which is further out, has nothing; they are tough.
I will concede that if we came up against a high solid object, be that a rock or earth, then we would most likely have an issue, but a quick pipe or hose replacement should be able to be done on the road with the spare bits that we have.
Mick.