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Old 05-03-2014, 08:09 AM   #10
Bob Landry
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Join Date: Jan 2011
Location: Austin, Tx
Posts: 1,910
Quote:
Originally Posted by jadatis View Post
But if you take to high pressure things go bumping.
Made spreadsheet for it but if you have ST tires , the maximum load has to be lowered by 15% first to give it the same deflection of a LT tire wich make them last longer. Then the needed pressure is mostly that pressure needed for the maximum load, yours 65 psi, wich is not the maximum pressure of the tire.

So if you can give me here maximum load and needed pressure for that of tires.
And GAWR ( gross axle weight ratings) of Travel trailer and number of wheels and axles, I can calculate the pressure for you. Will give a picture of filled in spreadsheet in my answer.

Best would be seperatate weighed wheel( pair) loads in the loading you drive.
But this is probably not done yet.
Now THIS is a good example of having too much time on your hands.
I run all of mine at the max pressure indicated on the tire and get 70K miles out of Michelins on my truck. The Load Range E Maxxis on the trailer gets 80lbs. That's good enough for me.
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