Forum Discussion

ncrowley's avatar
ncrowley
Explorer II
Jun 19, 2015

Inner Dually Valve Stems

One of my inner dually tires was leaking because of the valve stem extension. When I looked carefully at the rim, I saw that the valve stem was rubbing a spot out of the rim. It probably happened because I added a TPMS sensor at the end of the stem and increased the vibration.

I did research on this forum and found this was not an uncommon problem. I purchased a set of Borg one piece valves and a stabilizer that fits into the holes in the rim. They were expensive but they are really great quality. I had them installed today and hopefully the issue will be fixed. I purchased them from www.yourtireshopsupply.com I called them and they were great to work with. They helped me find the correct steps and stabilizers.

The thing I find discouraging is how many things like this I have to find out the hard way. I had no idea that the valve extensions could be a problem and that adding a TPMS sensor makes things worse. Yes, it makes perfect sense when you think about it. I often wonder what else do I not know that will cause me issues? I read these forums, I have attended seminars and I went to Camp Freightliner. By the way, Camp Freightliner was great! It was well worth the cost of the class. I also learned a lot there.

Before I purchased the coach, I tried my best to educate myself but looking back, I really did not know what I needed to know when purchasing the coach. I hired someone to evaluate it but there is just so much to know to maintain one! I may be asking too much, but there ought to one place to go to get this type of information.

For example, I now know the dealer put cheap tires on the coach and even though they are new, they will not last as long as a better tire so I will need to replace them sooner than I would have liked to.

Do I like my coach? Yes, I think I made a good purchase but I did not do so with the knowledge I should have had. I just love traveling in it and having it allows me to see things I would have never seen and do things I never would have done otherwise. I just had no idea how consuming owning a motorhome can be.
  • Sometimes the best way to learn is by trial and error and just plain old fashion making a mistake. Hopefully when one learns that way it is not too expensive. I think you got a great coach by the way. Hope you enjoy it for a long time.
  • And I assume you realize that the temperature readings on your TPMS is incorrect when the sensor is mounted on an extension and out in the wind.
  • I did not know that the temperature reading is not correct - thanks for telling me. It is pretty close to the rim but it is not right next to the tire so that makes sense.
  • "ncrowley".....You just never know what's going to go wrong on these coaches.

    I think anytime you add an aftermarket product, you have to look at the consequences of the installation. As an example, I have the SMI Air Force One brake unit on my coach. They supply a ton of install parts, but not the one part I think they should, split tubing wire wrap. You have to add about 15' of airline from the brake system to the rear of the coach. There is no way I would run airlines for my brakes without shielding them where they pass thru and along the frame. It's cheap to buy the wire wrap and that's SMI's position, but sometimes you have to anticipate problems.

    Glad you got it fixed and I'll bet you have much more confidence in your coach tires knowing that the valve stems are more secure and rid of the extensions. Don't worry about the tires the dealer installed. Keep the pressure up and you'll probably age them out before they ever give you any issues.