[Tim]

First off Grizz I don’t know how much pressure you run in your tires and I don’t usually even get in tire discussions because I have different thoughts on that but if your tire was low you could of popped the bead.

I have seen things happen on trucks that sometimes you can’t explain and just consider yourself lucky.

You need to contact Truk and get a tire pressure monitor, you only get away with a story like this once.

Later

bv

[Archived]

Every time tire pressures are checked the Schrader valve is opened, and then has to reseal.

If it did not seat itself properly when the pressure was last checked the slow leak could have caused the pressure loss. Any other slow leak such as the bear or a puncture is not going to repair itself so if it held after refilling it was likely the Schrader valve.

At this point you might give some serious thought to 2 new tires. Unless the leak happened while the coach was sitting in the RV park, you probably drove on the inner tire with pressure much lower than the required pressure. But as the tire pressure on that tire went down, the outer tire was carrying more and more weight, and as the weight it carried increased it likely exceeded the pressure required in the tire for that weight.

[Archived]

I strongly agree with Jon. Two tires to be replaced.

Running with a flat on a multi axle trailer or on a dual wheel subjects the “good” tire to overloading, almost guaranteeing a catostrophic failure of the “good” tire.

I have reached this conclusion as a result of three personal experiences. BTW, if anyone finds a Florida license plate attached to a portion of blue steel fender near I-75, Exit 13 in Georgia, it’s mine.

[Archived]

Shrader valve or extension comes to mind if you have no puncture in the tire from road debris, especially those extensions.

Here’s a possibility… You removed the valve stem cap, the extension wasn’t tight and turned loose just a tiny bit. Now the extension is leaking at the valve stem, but you can’t hear it. You put the valve cap back on, but again, it didn’t tighted the extension. You lost all your air, but when you aired it up and put the valve cap back on the extension was just tight enough not to leak. Tighten your extension and see if it’s loose. Or better yet, throw those extensions in the trash. If you aren’t using extensions, the Shrader comes to mind.

According to Michelin, that tire is junk.

PS – Pressure Pro would have prevented the run flat with the low pressure alarm before the tire lost enough air to consider it damaged and needing replacement.

[Fred F.]

I ran into the same issues with the extensions. Pulled those off and replaced them with solid stems.

The extension is just one more point that can fail and leak. Doesn’t matter how tight the valve cap is installed, if the extension isnt seated properly, or it’s seal is bad, you can have a leak.

[Archived]

As Jon points out, checking tire pressure can cause small valve leaks. I have started using soapy water when checking tire pressure. I almost always find one leak. Getting a good blast of air through the valve fixes it.

[Jerry]

I never mentioned valve stem extensions because I know the folks on this forum are too well informed to use those.

[jack]

Thanks for the insight! We are in Coburg for some minor repairs next week, so I’ll have them do an inspection and replace as needed.