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Almost a flat tag tire
Just got home from a trip yesterday. About a 100 miles from home, I pulled into a rest area, and walked around the bus with my heat gun. All tires were around 110-120 degrees, the inside drive were 120, the others were 110. The left rear tag showed 140, I stopped and looked at it closer, even checked the hub, and it was 84. I thought, why is it higher? The sun was on it more than others, so I figured that was it. Should have checked the pressure with my guage…….but didn’t.
Got home, washed bus, put it up, and everthing looked fine. Got home today, went out in shop to check as usual, and saw the same left rear tag tire was low on air and sagging more than it should. Checked the pressure, it was 40! Put soap on the valve stem cap cover, the good one, in the pic below, showed no leak. SO, I took the tire and wheel off to roll it around and find the nail or screw in it……..nothing. So, I decided to air it back up and see what happened. It took air very slowly, so I took the cap off, and when I did, air was rushing out! The valve core was leaking bad, and it was tight.
#1 I think the double seal cap saved me, and held the air enough to get home.
#2 Pay attention to your tire temps, it was trying to tell me something, and I didn’t listen, good thing I didn’t go more than 100 miles or so. I will check with the guage next time!
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6 Replies
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You might consider pulling the tire off the rim and having a tire expert take a look at it. The damage is not always visible on the outside. Replace it if in doubt. It would be a darn shame if that thing lets loose someday and damages your coach.
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I bought a fluke thermal gun & use it along with my pressure pro system. It’s a life saver.
It’s also handy inside the coach to ensure my AC output temps are good vs my return temps.
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Glad you got it home Jerry.
You need one of these, give me a call:
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Don’t even have it checked! My only blowout in 350K miles has been a tag and the bill was almost $15K! You actually took a chance airing it up if it wasn’t in a cage.
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Ihave to agree with Joel. I think our tags are OK at 70 PSI based on extrapolating pressures based on weight, I don’t know if you did run it underinflated, or if you are OK, but the risk is too great to take a chance.
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I agree with what everyone is saying, the pressure was at 40 the next day, so I’m convinced it was above 70 at least while traveling the day before, plus, I noticed no evidence of being low while I washed it etc. At 40 you can see the sidewall bulging.
Tom, I have had 2 flat tires with Tire Pressure sensors, but they were not made by pressure pro. I have just been reluctant to try another system with screw on valve stem type sensors.
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