Warning for D4-2 Owners – Spare Wheel Access Issue

May 28, 2025
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I’m the owner of a 2025 Bailey Discovery D4-2 and wanted to share a recent experience that might help others.


I was looking for the yellow boiler valve under the seat to close it but couldn’t find it, so I decided to take the spare wheel out. While searching through other forums, I noticed that no one seems to have attempted this—likely because most haven’t had to use the spare wheel yet. But when they do, they’re in for a bit of a shock.


Have any of you D4-2 owners tried removing the spare wheel from its storage space under the seat? If not, be very careful—I ended up shearing off the Whale Watermaster socket from the wall while trying to remove the wheel. Luckily, my boiler hadn't been filled, otherwise the caravan would have been flooded.


I just wanted to bring this potential issue to the attention of other D4-2 owners. It seems like a design flaw worth being cautious about.
After breaking that pipe on the back of the Whale Watermaster, you can see the black rubber marks on the hose where the spare wheel came into contact . It's definitely a design fault where the hose connects. This morning, I put the wheel back where it belongs, and after the caravan is fixed, I will ask the dealer to remove the wheel. I can see this happening every time—maybe there’s a knack to it, or perhaps the pipe needs to be rearranged closer to the wall.
I'm not sure if they'll put it through as a warranty claim; we’ll wait and see. I’d be really disappointed if they charge me, as I feel like I was set up to fail. I'm sure there are a lot more people here with a D4-2 who don’t know this can happen. I hope they read this and are now aware.
 

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Last edited:
May 28, 2025
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I was talking with a lady who owns a Bailey Discovery D4-4. Her spare wheel is also under the bench seat, and she can't remove it either—though, at least, the inlet valve isn’t on top of the wheel, so that’s a bonus.
 
Nov 16, 2015
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I was talking with a lady who owns a Bailey Discovery D4-4. Her spare wheel is also under the bench seat, and she can't remove it either—though, at least, the inlet valve isn’t on top of the wheel, so that’s a bonus.
Surely you mean , the inflation valve   is,  on the top, just be thankfully that the spare wheel is not in the AlKo carrier, a totally stupid design, the retaining clamp rubs on the tyre wall and the valve is facing up.
 
May 28, 2025
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No, not the tyre air valve — I know the difference.
On the first day of ownership, I encountered an issue while trying to locate the yellow water valve, as I’m new to caravanning. I couldn’t find it, so I had to remove the spare wheel. That turned out to be nearly impossible. The hose that feeds the boiler from the water inlet is positioned directly on top of the spare wheel, which caused me to break the plastic inlet that connects to the hose.
 
Nov 16, 2015
11,929
4,106
40,935
No, not the tyre air valve — I know the difference.
On the first day of ownership, I encountered an issue while trying to locate the yellow water valve, as I’m new to caravanning. I couldn’t find it, so I had to remove the spare wheel. That turned out to be nearly impossible. The hose that feeds the boiler from the water inlet is positioned directly on top of the spare wheel, which caused me to break the plastic inlet that connects to the hose.
Sorry I misunderstood your posting. I took it as the wheel Inflation valve not the drain valve for the boiler/ heater.
 

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