Well spotted Xander, a small, chunky pushbike-sized tube to seal the tyre bead to bead, not the rim so you keep spoke tension ability.

I think I've seen similar on giant-tyred 4WDs run in Iceland for extremely low pressure (more for rim retention as they are tubeless already of course). I've also used pushbike tubes in a slightly similar way to seal and so mount tubeless 4WD tyres.

Looks like Tubliss is aimed at dirt bikes: light and relatively slow but a lot of impact flex going on - plus a van nearby. Not the same as a GS12 laden with all the Touratech fruit. Avoids the whole road-use legal issue and who can blame them, but AFAIK speed ratings are tyre related(flex + friction = heat = high wear/failure).
No friction with the red liner (or barely any compared to a full contact tube) and even less heat with Slime-like sealant, just regular tyre flex. Run a good tyre with the appropriate rating for your bike + right pressure for the load/terrain as you would normally.

I'll give them a try - all you got to do is take tubes with until you have faith in it.

Ch

Added later:

Just found this on Tubliss tire product - ADVrider

Tubliss officially is not recommending them for highway use. One reason is that they have not been tested to any standards for highway use and another reason is that if the system were to fail while riding at highway speed the tire goes flat immediately. No slow leaks, just boom and it's gone. Now having said all of that they have some customers that are using the system on the street and have had no problems as of yet. Tubliss and Brap Offroad both are selling this system for off road use only at this time. What it gets used for is out of our control.
If you have any other questions, please feel free to email me back or call me at 717-285-7873.
Thanks and have a great day.

Marty Graver
BRAP! Offroad

So, as you guys probably already know, these are for off-road, slower speed only.

I think when he says failing he means the red core bit - not a regular tyre tread puncture where a flat would occur in the normal tubeless fashion (ie: slower than tubes). If anything the red rim lock would make the deflation safer as it would hold the tyre on the rim. So as I understand it, as long as the red tube doesn't fail (it's v thick and far from the tyre tread most of the time) it's business as usual.

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Morocco Overland 4 (2025) • Trans Morocco Trail