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Old 03-01-2015, 08:36 AM   #29
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they were supposed to install them in your tire when they installed the sand.. this is what I am saying , they claim they install them when they balance the tires but they did not install them on mine.. you are very prone to leaking air when you use this stuff..

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Old 03-01-2015, 10:31 AM   #30
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Bridgestone warranty
"Tires with internally applied additives for balance, sealing,
cooling, or any other alleged tire performance enhancement
will not void the Limited Warranty unless an inspection of
the tire reveals damage related to the use of the additive.

However a leaking tire caused by contaminated valve may void the warranty.

Retired Design & Quality Tire Eng. Read my tire blog RVTireSafety.com to learn more about RV tires, valves & wheels. Read THIS post on why Tires Fail
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Old 03-02-2015, 09:52 AM   #31
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Assuming good tires, I'm guessing that those who had issues with dynamic balancing had one of a couple of things wrong:

1. Shop used too much or too little for the application.
2. Shop didn't install filtered valve stems, and owner didn't do their due diligence to research and understand their advantage.
3. Shop used Equal, and used an excessive amount of lube on the beads, slopped it inside the tire, etc., causing the Equal to clump up.
1985 Gulf Stream 34' Sun Stream
1997 Newmar Mountain Aire 3757
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Old 03-02-2015, 04:45 PM   #32
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I think youn are to leave the sand in the bad when placed in the tire. I have always wondered about any damage done by the sand and bag rubbing on the inner for 50,000 miles or so
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Old 03-02-2015, 05:30 PM   #33
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Originally Posted by Gary RVRoamer View Post
The "sand" is a dynamic balancing product called Equal and is widely used in commercial tire applications (trucking). And in many motorhomes as well. I have it in my rear tires and no real issues. However, the tire guy did not install the special "filter" valve cores that keep out the sand and every once in awhile the Schrader valve sticks open when I'm checking pressure or adding air. Minor nuisance and not real hard to clear, but I highly recommend the filter cores.
I have had this same experience. Camping World put two new tires on the front when I bought my Class A but apparently did not put the correct filtering stems. It has been a problem, especially when I was not aware and the tire leaked down because of the sand like material in the valve. Now I double check for leakage after I check the air pressure.

Now that I know a little more, I would choose Dynabeads.
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Old 03-02-2015, 05:47 PM   #34
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The word "sand" is a misnomer. Most tire shops use Equal, which is a plastic composition, though similar to coarse sand in size & appearance. The rest use Dynabeads, which are a bit larger but also a synthetic material. Both are smooth and chemically inert.

Gary Brinck
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