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Old 08-31-2014, 08:04 PM   #1
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Tire Pressure Question Again???

Know this has been kicked around the block several times and I have read several of the threads and not found an answer so here goes again.

We have a 2010 CC 36RE with a yellow sticker showing 110 pounds pressure for called tires of LT235/85R16/G, witch is what I have on the unit (Goodyear) cold inflated to 110 pounds.

Now for problem and question: All four tires are showing under inflated wear on the inside and outside edges. I have 7000 pound LCI axles with Center Point Air Ride installed by LCI with TPI monitoring system. Over the past 8 weeks I noted some information about tires while pulling after having the Center Point installed, Tire pressure according to TPI was running between 110 to 115 pounds, temperature was between 90 to 110 degrees on hottest days, hub and axle was running between 90 and 100 degrees again on hottest days (using laser temperature finder). The wear is even on all four tires and according to the tire people at shop tires are still in great shape.

My question to them and here is should I over inflate the tires to 115 to 120 pounds combat the tire wear or look else where for problem.

The tire shop could not give me a satisfactory answer as they where not sure.
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Old 08-31-2014, 08:08 PM   #2
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Have you considered axle alignment the culprit and not tire pressure?
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Old 08-31-2014, 08:13 PM   #3
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I would not overinflate the tires for any reason.
Doing so may violate your warranty.
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Old 08-31-2014, 08:14 PM   #4
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It is said that once a tire develops a "wear pattern" it will keep that pattern through out the tire life. It is true. That said you can over inflate a tire to wear the center track down, just never never ever under inflate a tire.
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Old 08-31-2014, 08:29 PM   #5
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Quote:
Originally Posted by Lloydg View Post
Have you considered axle alignment the culprit and not tire pressure?
This was checked and done while at FROG by LCI when they installed the Center Point Air System. Good point, may have to have it rechecked.
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Old 08-31-2014, 08:44 PM   #6
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NEVER over inflate! Tire pressure will increase as the temperature rises and you could risk a blowout. If the Rated TP is 110 Cold, keep em at 110 Cold (you will probably see them go to @ 115 @ 90-100
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Old 09-01-2014, 11:38 AM   #7
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Maybe you should find some good weight scales to see what your trailer weighs. You could be carrying too much weight for the tires.


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Old 09-01-2014, 11:42 AM   #8
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Update to tire inflection on LT235/85R16/G, spent morning at tire dealer where I got my tires. He had the same tire in stock so I pulled one and checked it against my tires. I was wrong on tire wear, the new tires did not have groves on side as regular tires do, they are somewhat smooth compared to others. We measured the tire depth and check all tires for wear and they are OK and will within usage for wear. We pulled the spec up from Goodyear and 110 pounds is right for load, he also checked alignment of axles and balanced the tires to insure a smother ride.
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Old 09-01-2014, 12:22 PM   #9
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I would not over inflate either. Not sure what is causing the problem. I think you need to get a few opinions by a couple different tire shops and weight the information.

You might just need to replace the tires.
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Old 09-01-2014, 01:26 PM   #10
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Have the same problem with my tires, asked my tire man who has done this since he was a kid he said the tire sidewalls are not stiff enough, probably too much weight on them or get stiffer sidewalls
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