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Old 03-30-2016, 04:53 PM   #31
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Originally Posted by MiataHoarder View Post
Bravo JrWalkPa1 !!

No matter what seller's tell you, PLEASE install metal valve stems if you use the TPMS sensors that attach to your valve stems. They weigh around 1/2 an ounce, which isn't much, until the centrifugal force inertia of a spinning wheel multiplies it and deforms the base of a rubber stem.

We'd just pulled off I-5 at 2 AM to overnight at a rest area. We heard a loud pop and then a loud hiss we attributed to a big rig emptying its air tank. It was one of our valve stems. This was on a light truck Michelin at 80 psi on tires with less than 16,000 miles. The photo tells the story. We replaced all with metal stems at the next town's tire shop.

The TPMS vendor's user manual recommends metal stems, but, says nothing about requiring them. The brand is one you see most often in on-line RV publications. Though they function well, I wouldn't use them on any tire that doesn't have metal stems.
You are correct except for the part of metal stems. TST will state not to install on rubber stems more then 1/4" other wise use metal. Metal is the way to go and SHOULD be used but they do say they can be installed on rubber stems not to exceed 1/4". Now this was like 3 years ago so they might have changed there recommendation. I used them on a rubber 1/4" stem until I bought new tires and then switched to bolt on metal. I do agree they should be on metal per your post myself..
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Old 03-30-2016, 06:37 PM   #32
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I agree that metal valve stems are optimal. BUT, I bought chrome valve stem covers. They slip over the rubber stem and the lower part of the sleeve fits snug in the pocket in the wheel at the base of the stem. This prevents the rubber stem from flexing. Over 7k miles on my setup without any issues or signs of flex.
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2016 F250 2WD CC SB XLT 6.2 3.73 3,295 lb payload cap.
2014 Salem Hemisphere 282RK 8k lbs loaded, Equal-i-zer WDH, TST 507 TPMS
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Old 03-31-2016, 04:30 AM   #33
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I agree that metal valve stems are optimal. BUT, I bought chrome valve stem covers. They slip over the rubber stem and the lower part of the sleeve fits snug in the pocket in the wheel at the base of the stem. This prevents the rubber stem from flexing. Over 7k miles on my setup without any issues or signs of flex.
Sounds like that is working for you, I know that when I had them on mine the blow through which were just slightly heavier then the screw on type, that the locking screw showed marks on my rim where the screw was hitting so I knew they where flexing to much, So when I bought the new tires which came with rubber stems 1/4" I had them put in after, that is how I found out about the flexing of the stem. If I remember right, they charged me 9.00 per tire to install the metal stems. The system may not be perfect as other threads have said but, I'm so glad my friend OC said to buy it. Makes me feel safer knowing whats going on back there, blowouts scare me, after my first blow out and seen that tire I can see why it causes so much damage. I was lucky I seen it blow and was able to stop in time to stop any damage....
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Old 03-31-2016, 06:53 AM   #34
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Have them on my toad. Rubber stems, 20000 miles, no issues.
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Old 03-31-2016, 07:31 AM   #35
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I have the eezz tire monitor they don't install as ezz as they tell you. I have 2 trailers that I want to monitor. bought the relay that they said I would need .installed them .called the service guy who that is all he does no help .it was like I was bothering him.never will buy them again
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