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Dual Rear Tire Valve Stems?

TwoPines
Explorer
Explorer
Looking for suggestions about options for adding air valve stem adapters on dual rear wheels? Bought a Jayco E-350 Class C with 225/75 16" tires a few months back and while winterizing noticed that the valve stems on the dual rear wheels are located between the two tires. So, unless I dismount the outer tire, I can't check tire pressure on either tire, nor can I add air if needed. Are there types of adapters preferred or are there replacement stems or what options are there? I would rather have an idea about what I need before going to the tire shop for a fix.

Thanks in advance.
20 REPLIES 20

kalynzoo
Explorer
Explorer
I would go to a Truck tire center and have them mount solid stem extensions. They cost a bit more but it is a one time expense. I used the steel flex extensions for many years on many motorhomes. Twice over the many years I had gradual deflation due to wear on the stems. That is not to say the flex stems were bad, rather I did not check them regularly. I have gone for solid stems, not the extenders mounted in the tires.

DrewE
Explorer II
Explorer II
You do need a dually tire gauge and likewise a dually inflation chuck. These have a sort of angled head on the end, with one port back at an angle (to get to the outer tire) and one forward on the end (for the inner tire). I find the style with the end port straight with the stem, rather than angled, is much more convenient.

With one of these and short valve extenders (1" or so) you should be able to check and air up the tires with only moderate hassle. The fancy extenders are nice, but you can get simple short airless ones that generally work fine too. Make sure your valve stems have a metal shank (as is usual for duallys) or are all metal; rubber valve stems with extenders tend not to last very well.

Dually tires can be rather a pain, truth be told. Ford's love for wheels with lots of tiny access holes doesn't help matters any.

Bordercollie
Explorer
Explorer
Having solid metal custom formed valve stems also installed on front wheels is best for easy tire pressure checking and filling with beauty discs installed, no need for special chuck or gymnastics trying to make gas station tire chuck seal properly and not let your air out. Cheap screw on valve extenders are not reliable and can cause tires to lose pressure and fail with RV underside damage or possible loss of control. This subject should be a "sticky" on this forum.

DouglasC
Explorer
Explorer
The pressure of the outside tire can be checked with a proper gauge where you can reach in and then pull back on the gauge to get a reading - - but the inside dual will need an extender. I have always used extenders and have had them installed by a tire store or by my mechanic. They can be problematic and will wear and leak over time. I just had mine replaced after about 5 years in service due to leaking.
Doug
2006 Jayco Greyhawk Model 27DS
Towing 2019 Ford Fusion Energi with Brake Buddy

MobileBasset
Explorer
Explorer
If you go to a commercial trucking tire center they can make you custom brass valve extenders for a reasonable price. Or you can go to one of the online sources and get the same thing for an exhorbitant price.
MobileBasset
2014 Itasca Spirit 25B on Chevy Express 3500 chassis
Daisy and Hank the Basset Hounds

IAMICHABOD
Explorer II
Explorer II
What is needed is a extended valve stem that will let you quickly check your tire pressure. They add no extra weight like the Extenders would and balancing is no problem.
The best on the market,that are the original,are Tire Man any others are Knock offs.

Chuck is the original designer of these an he has been around for years. If you have any questions just give him a call, he is always happy to help.

The kit looks like This it is for all 6 wheels,they also come with flow-thru valve caps so you don't even need to take then off to check the pressure.

Here is a list of all the products he sells.
2006 TIOGA 26Q CHEVY 6.0 WORKHORSE VORTEC
Former El Monte RV Rental
Retired Teamster Local 692
Buying A Rental Class C