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Old 04-26-2014, 05:01 PM   #41
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I have read that you shouldn't use a lower pressure than 70% of the max rated pressure in any tire. That is 56lbs so I guess that is not too far off if Michelin says not lower than 60.

If you want to do the least damage possible on your multi axle trailer there is solid engineering data that supports running the tire max 100% of the time. (We only talk cold set pressure here not operating pressure)

The damage is called "Inter-Ply Shear" and I have done a post on my blog just on that topic if you are interested in the technology behind my recommendation.

Where did you read the 70% of max claim? You can PM me if you wish.
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Old 04-26-2014, 06:30 PM   #42
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I don't recall where I read it.
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Old 04-27-2014, 08:08 PM   #43
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I don't recall where I read it.
Well whoever told you to run less than the tire sidewall max on your multi-axle trailer obviously does not understand vehicle dynamics and the effects of cornering on the belt package inter-ply shear.
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Old 04-28-2014, 10:21 AM   #44
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This thread was about truck tires.
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Old 05-03-2014, 03:15 PM   #45
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This thread was about truck tires.
My bad. I was looking at the trailer avatar.
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Old 05-06-2014, 12:18 PM   #46
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Setting up for the summer, I went with 65 on the rear and 55 in the front on my Michelin LTX M/S2. Discount Tire said to do 80 and I said no. Any arguments to how I had mine setup?
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Old 05-06-2014, 12:25 PM   #47
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Setting up for the summer, I went with 65 on the rear and 55 in the front on my Michelin LTX M/S2. Discount Tire said to do 80 and I said no. Any arguments to how I had mine setup?
Sure not with me, I do very similar. 55 front 60 rear when towing, 35 front 30 rear not towing.
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Old 05-06-2014, 12:49 PM   #48
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Currently running 55 all around on my Michelin LTX AT/2 tires. I had 1.5 inches of squat when hitched with these tire/pressure compared to 4 inches with Stock Perrelli P Series. I went with the more aggressive tread for the snow we get here, never stuck since purchase.
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Old 05-06-2014, 01:07 PM   #49
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Setting up for the summer, I went with 65 on the rear and 55 in the front on my Michelin LTX M/S2. Discount Tire said to do 80 and I said no. Any arguments to how I had mine setup?
Not knowing your actual F & R axle loads when hooked up and when not hooked up it's impossible to give an informed answer other than to point to your vehicle placard. But if you have changed tire size then you can only get a correct answer based on your actual axle loads fo r the TV.

Someone advising you what they use for inflation is like telling you the pants size you should buy because they wear size 40x29.
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Old 05-06-2014, 01:14 PM   #50
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Not knowing your actual F & R axle loads when hooked up and when not hooked up it's impossible to give an informed answer other than to point to your vehicle placard. But if you have changed tire size then you can only get a correct answer based on your actual axle loads fo r the TV.

Someone advising you what they use for inflation is like telling you the pants size you should buy because they wear size 40x29.
Can I supply the door sticker and tongue weight or would this be something where I go to a scale and find the actual axle weights?
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Old 05-06-2014, 01:19 PM   #51
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Can I supply the door sticker and tongue weight or would this be something where I go to a scale and find the actual axle weights?

Info on the Placard or "door sticker" is the MAx axle load. No way of knowing if you are over or under the Max without actual scale weight. I suggest truck stop or local gravel or grainery.
Check yellow pages for "Truck scale" or google "CAT scale or "Truck Scale"
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Old 05-06-2014, 01:21 PM   #52
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Thx
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Old 05-06-2014, 09:53 PM   #53
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Not knowing your actual F & R axle loads when hooked up and when not hooked up it's impossible to give an informed answer other than to point to your vehicle placard.
Do manufacturers publish inflation guidelines for each tire they manufacture, perhaps with a table providing a range of pressure over a range of loads?



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Old 05-07-2014, 03:28 PM   #54
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Do manufacturers publish inflation guidelines for each tire they manufacture, perhaps with a table providing a range of pressure over a range of loads?

Chris Cowles
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Yes the reputable ones do. BUT If you are pulling a multi axle trailer you should always set the cold inflation to the inflation on the tires.
If you have a motorhome you can adjust the inflation to the psi needed to carry your measured tire load on the heaviest tire on each axle +10% and all tires on an axle should have the same inflation.

Read my blog for more facts on tires.
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