Saturday, December 3, 2022


RV Tire Safety: Avoid problems with dually tire hose extenders


with RV tire expert Roger Marble

The key to avoiding problems with a hose or any type of valve extension on a tire is to be sure the outer end is solid.

Some hose kits come with small brackets that can be pop-riveted to a hub cap. Others have brackets that attach to a lug nut.

People often fail to support the hose or bracket when checking or adding air. The force needed to get a good air seal is enough to bend or loosen the hose mounts. Or they inadvertently twist the hose and end up with a leak where the hose screws onto the metal valve. You need to hold the outer end of the hose firmly to prevent movement or twisting or you can expect to eventually have problems.

In this blog post, you can see my setup (42,000 mi.) with no leaks or failures.

Since I run a +10% psi margin over the minimum pressure I need on my Class C based on 4 corner weights, and since I always run TPMS (that I have tested), I simply use the TPMS to tell me the inflation each morning before I start out.

During a cross-country trip from OH > OR > OH over 7 weeks, I only needed to add air once. So since I am not messing with the hose extensions, I am not pushing on their mounts or applying a force that might result in a slow leak.

If/when I ever do need to remove a sensor to change a battery or add air, I ALWAYS spritz Windex to check for any leaks after I am done.


Read more from Roger Marble on his blog at or on



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2 years ago

Since your referenced 2013 blog entry, have you seen improvements or have any updated suggestions/cautions for using theses systems? Thank you

2 years ago

I tried, once, flexible valve stem extensions on my dual wheels. One end broke free, went between the wheels, and almost wore right through the inner sidewall of the outer dual. No more flexible extensions.

Roger Marble
2 years ago
Reply to  Impavid

How did it break free? Did rivets fail? Brackets in my kit required 2 rivets each. It was real solid in the mount.

2 years ago
Reply to  Impavid

Your best option is to choose a rigid valve stem such as the Dually Valve by Borg or the Tire Man. Avoid any type of extensions, they are nothing but trouble. I’ve had the Dually Valves for years and they work great with my TPMS sensors.

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