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Old 07-31-2018, 09:08 PM   #1
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How to check tire pressure in rear tires ?

Here I am again, folks, with another crazy question. My hubby wants to check the tire pressure in the rear tires of our Thor 23TR, but we didn't find any valve stems. How is it done?
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Old 07-31-2018, 09:36 PM   #2
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All six tires are mounted on the rims the same way with the same valve stems. Just look through the slots in the wheels and you will see the inner stem. You will need to buy a special dual chuck air pressure gauge or valve extenders if you are going to check the air pressure regularly.
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Old 07-31-2018, 09:40 PM   #3
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If you go with valve extenders use the solid metal ones and not the braided type and insure the valve stem on the tires are metal. I fought this for a long time until I went this route. Now I'm on top of it. In like Flynn.
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Old 07-31-2018, 11:28 PM   #4
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But (in my opinion) the best solution is to replace the regular valve stems with “dually valves”. Expect to pay about $200 to purchase a kit and install on all four rear wheels. The tires need to be dismounted and remounted at a tire store. I know it sound ridiculous to spend this much or go to so much trouble but it puts both valve stems on the outside for easy access and is virtually leakproof. Also, if you want to use a TPMS system, it makes it easy. Try as I would I could not get my hand through the wheel hole to install the senders. And god forbid if you should drop one between the wheels! And, FWIW, I consider TPMS an utterly essential piece of kit. Good luck.
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Old 08-01-2018, 12:37 AM   #5
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Quote:
Originally Posted by Gary A View Post
If you go with valve extenders use the solid metal ones and not the braided type and insure the valve stem on the tires are metal. I fought this for a long time until I went this route. Now I'm on top of it. In like Flynn.
I have the braided type on my MH and have absolutely no issues; I even have TPMS sensors on them. They are attached to the wheel simulator with supports that are held in place by the simulator lug nuts.



BTW the kit at Amazon costs $50

https://www.amazon.com/Phoenix-USA-A.../dp/B004VRO19Y
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Old 08-01-2018, 12:43 AM   #6
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Tire pressure is checked with a straight in dual foot tire gauge. (trucks or RV's) Gauge pushes onto inside dual valve stem and pulls against outside dual stem. Same type chuck is used to inflate the tires. Available auto parts or online.

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Old 08-01-2018, 12:51 AM   #7
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Should add. You have to remove the wheel simulators ( hub caps) to get to the valve stems. This tool helps.


Valve extenders are a good solution.
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Old 08-01-2018, 12:58 AM   #8
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I have a similar system to Tfryman and have had no issues with it (including the TPMS).
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Old 08-01-2018, 01:09 AM   #9
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Wear gloves when your messing with the wheel simulars (Very sharp edges) or checking your pressure without valve extention. I cut two of my fingers bad the first time I checked mine. Now I have glove with my tire gauge and wear them everytime.
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Old 08-01-2018, 02:24 AM   #10
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Thanks to everyone for this requested information.
It has been well noted!
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Old 08-02-2018, 07:27 PM   #11
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It took me a lot of battling different extenders and such over quite a long time until I finally come around to just taking the wheel simulators off mine and storing them....and throwing away all the extenders. Now I can just reach through the hand holes to get at the caps. I wish I'd done it day one.
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Old 09-06-2018, 01:49 PM   #12
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Quote:
Originally Posted by Long & Winding road View Post
Wear gloves when your messing with the wheel simulars (Very sharp edges) or checking your pressure without valve extention. I cut two of my fingers bad the first time I checked mine. Now I have glove with my tire gauge and wear them everytime.
Yeah, the wheel simulator cap on the front wheel is too close to the valve on mine. After arm wrestling with it a coulple of times I got a big pair of pliers and twisted the sides of the cap valve hole to make it bigger. It's better now but only if I hold onto the air chuck instead of the locking valve air chuck.
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Old 09-06-2018, 01:59 PM   #13
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I'll just repeat what Pete mentioned. A TPMS (tire pressure monitoring system) is about the #1 piece of safety equipment for any RV, no matter if you are a weekend camper in the summer or a full time traveler. Knowing the exact psi and temp or all your tires is very important.

I would have a good tire shop change the stems to all solid metal and then pick up one of the TPMS. It will serve you well for years to come on about any RV you end up with.
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Old 09-06-2018, 02:47 PM   #14
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Which brand of TPMS would you suggest?
(If you were buying a set...)
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