Thor Tiburon 24TT Water tank issue

[Booof]

I have a 2020 Thor Tiburon 24tt and love it. I do have a few questions that I need some help with. To start the fresh water tank is like 7.5ftx2ftx3.5inches. like a flat pancake that has an overflow coming out of the side close to the top of one side. Everytime we fill and drive for a few hours we lose 50 to 90% of our fresh water due to the sloshing and non level position of the tank. I plan to install a 15' loop that goes higher into the kitchen cabinet to eliminate the outgoing water. Has anyone else had an issue? and how have you or the dealer fixed the issue? I have a couple more that I'll write about later.
Thanks

[fisher4hymn]

Same issue with my Tiburon 24FB because as you say the vent/overflow is on the side and you realistically only have 2.5 inches deep to store water - less if not perfectly level. Thor customer support didn't offer any suggestions other than not travel with much water! (They were very concerned about weight with only 760 lbs on my coach) OK if you are not boon-docking but frustrating if you are. Did your loop idea work?

Thanks

[lizzyb62]

We have new 2022 Tiburon 24FB as well with this water leak issue. RIDICULOUS if you want to dry camp, which we often do. So frustrating ☹️

[EV2]

Where does the overflow exit under the coach?

[ducksface]

Look up
Scupper valve.

[lizzyb62]

Originally Posted by EV2

Where does the overflow exit under the coach?

Underneath in the middle. My husband was wondering about releasing pressure -

[Snooker_ML]

Originally Posted by ducksface

Look up
Scupper valve.

But if you add a scupper valve what happens if you overfill the fresh water tank capacity?? The water coming into the fill will bulge the tank until something gives. Will it be the scupper valve flap or something more destructive? Seems like a manual valve or upwards tubing is better?

[barabein]

I saw this issue on my 22 Tiburon FB as well with the water leaking out of the over-flow line just in front of the right side rear wheels and behind a screwed in plate.
I plan on running the vent line over the frame rails to the other side of the coach but I have seen options to add check valves as well. Either option would eliminate the leakage when the rig is leaning to either side and be high enough above the max level of the tank at the rear that water shouldn't leak out during acceleration. This also shouldn't cause an issue with the tank venting when it is fully filled, just won't leak out half the tank on the first corner.

[lizzyb62]

The longer we have this (and it’s only been a year), the more problems that arise. My in-laws purchased this 2022 Tiburon without doing any research and unfortunately if they had they would have seen the myriad of problems. Aside from water tank issue….Bathroom door doesn’t latch in place so bangs open and shut while driving unless you shimmy something, bottom drawer won’t latch shut, trim is coming off, bed collapsed ( yes the legs were extended properly), the water heater breaker kept over-heating because the heater was not connected properly at the factory to begin with…. The whole thing just so hastily slapped together it’s a joke. The only thing of any value is the Sprinter chassis it sits on. They are on a cross-country trip and are so frustrated with things going wrong that they are going to sell it asap upon their return. We get that this is the nature of RVs but this is just beyond ridiculous