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Old 07-04-2016, 11:21 AM   #31
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Quote:
Originally Posted by Tireman9 View Post
If you read my blog and posts from a few others who actually know about tires you will see that we say that you set the pressure before the tires get warmed up. Tires are designed to tolerate daily temperature changes.

You should never bleed air from a tire that is "Hot". In this case "hot" means having been driven on or in sunlight in previous 2 - 3 hours.

Pressure will increase by 2% for each rise in temperature of 10F. Note the internal tire temperature is usually hotter than the reading from a TPMS.
I have the same question as Delford above, I understand what you wrote here, I have also read your blog, but that doesn't answer the question he asked. example: You know you don't have a leak, but one morning the temp outside is 75 degrees and the next day it's 70 degrees your PSI will be lower at 70 by 2 or 3 PSI but once you get rolling it's up to normal sidewall pressure. Thanks for your answer. PS: even being inflated to the sidewall PSI which is 65 lbs. which is "D" rated 2 or 3 PSI still gives the tire of 30% over the axle weight that the unit came with, that is what puzzles me. everytime you post and leave a link I read it also, Thanks for being on this web site, very informative....
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Old 07-07-2016, 10:41 AM   #32
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We had a blowout on Monday (4th of July). Tire pressure was checked before we left, tires have less than 5000 miles on them, it was hot out, 97 degrees.
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Old 07-07-2016, 11:11 AM   #33
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Normally I would never question the knowledge of Tireman... I would THINK any protection against flapping tire hair would help. A 1/8" glass will slow a bullet. I think 1/8" is over kill for shielding unless it was allum maybe. JMO
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Old 07-07-2016, 11:20 AM   #34
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Originally Posted by Eskimo57 View Post
We had a blowout on Monday (4th of July). Tire pressure was checked before we left, tires have less than 5000 miles on them, it was hot out, 97 degrees.
What was the brand of tires you have on and the rating? Do you have a TPMS on them, damage can happen fast, did you just lose that skirting on the fender or did you get more extensive damage? I had 6000 on my OEM tires Trail Express before I had one also... How did you catch it in time? No matter what that is a real bummer.
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Old 07-07-2016, 09:55 PM   #35
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No TPMS, tires were Towmax, I'm getting GY Marathons when I get the Rv back from repair. TPMS is on the list.
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Old 07-08-2016, 10:05 PM   #36
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Quote:
Originally Posted by Eskimo57 View Post
No TPMS, tires were Towmax, I'm getting GY Marathons when I get the Rv back from repair. TPMS is on the list.
Four of my five blowouts were Towmax with less than 1,500 miles on them. Just a coincidence I guess. Now have M8008s all around and about 3,200 miles on them. Happy Camper
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Old 07-08-2016, 10:23 PM   #37
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Originally Posted by Iwannacamp View Post
Normally I would never question the knowledge of Tireman... I would THINK any protection against flapping tire hair would help. A 1/8" glass will slow a bullet. I think 1/8" is over kill for shielding unless it was allum maybe. JMO
My local "tire guy" is also a stock car racer. We discussed using aluminum rather than steel but decided alum would be too soft to handle the initial impact of a flopping tread. He used steel in his race car where any like damage could occur like a scatter shield around his clutch and "U joints".
I expect some damage, but feel I need something more than paper thin sheet metal to protect my propane line, electrical harness and two water lines. The sheet metal that took the first blowout was turned to trash. Didn't provide ANY PROTECTION and all were ripped out. The 1/8 steel gives me peace of mind that I WILL have protection if it ever happens again. Then again, my new tires are not made in Shan Dong, China.
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Old 07-09-2016, 10:24 PM   #38
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Peace is what we seek. The differences in tire mounting/testing equipment are someone is prolly standing close by. You are not protecting flesh and bone you are trying to stop some of the damage.


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Old 07-10-2016, 02:58 PM   #39
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With many posts from people that suffered a failure there is a statement along the lines of "I just checked the tires that morning" or "50 miles earlier" or two hours before the failure".
I have no doubt that many did check their tires BUT as I covered in a blog post where I said "Don't check your air pressure". I know that sounds like heracy but there is some logic behind the suggestion.

When people check their tire pressure the gauge or air chuck has to force the valve core open so the gauge can get a reading. Sometimes the core can get cocked or a bit of grit can get into the valve in the core as seen in THIS post.

If they don't have a metal valve cap with an internal "O" ring in good condition and don't snug the cap down it is possible for air to leak out of the valve. This slow leak many times will take an hour or two till the air pressure in the tire is low enough for the tire to suffer a "Run Low Flex Failure" or what many call a "Blowout".

As I pointed out a TPMS eliminates the need to check your pressure each day and will warn the driver of a loss of air.

HOWEVER
In Eskimo's case it appears he suffered a tread separation, not a "blowout". This is caused by the deterioration of the rubber around the steel belts. The fact that he checked the air does not enter into this issue. I have posts on how to inspect trailer tires so you can detect a pending failure before the tire comes apart. It is important to understand the "WHY" of a failure if you want to prevent a re-occurance.
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Old 07-10-2016, 04:17 PM   #40
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A TPMS is piece of mind.


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