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Old 09-10-2016, 08:31 AM   #1
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2015 27' Flying Cloud
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Inflation PSI - Michelin LT225/75R16/E LTX M/S2

I know the max inflation for this tire is 80 psi & with this it has a max load of 2,680 lbs.

AS owners that have this tire -- what P are you running at & why?

We are in Texas where it can get quite hot in the summer --- do you recommend a different ambient temp inflation in summer vs. winter?

We have a 2015 27FB FC that I am upgrading the 15" GYM's to this tire.

Thanks,

Glenn
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Old 09-10-2016, 08:50 AM   #2
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We have had two 25FB's, a 2005 and a 2015, over the last ten years. Both were upgraded to the 16" Michelin LT's. We have run these tires at 72 psi with excellent results.

Brian
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Old 09-10-2016, 08:50 AM   #3
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I generally go with 60psi cold but I don't have the weight maxed out. Higher psi i.e. 70 psi seem to have a harder ride as evidenced by the movement of cushions etc. while travelling. Airstream states 80 psi but that is way too high for me.
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Old 09-10-2016, 04:58 PM   #4
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I run mine at 70. Seems like a fine compromise for my 25'....
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Old 09-10-2016, 05:17 PM   #5
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On OEM 16" equipped trailers, inflation pressure is 80.
For 16" retrofitted trailers, inflation pressure is 70 for load range D replacements, and 55 for load range C replacements.
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Old 09-10-2016, 05:39 PM   #6
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Michelin publishes (as most tire manufactures due) a tire pressure chart giving suggested tire pressure depending on weight carried.
Mine came with my tires - I use 50 lbs. with 15" rims per Michelin.
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Old 09-11-2016, 08:20 AM   #7
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Quote:
Originally Posted by Silver Hawk View Post
Michelin publishes (as most tire manufactures due) a tire pressure chart giving suggested tire pressure depending on weight carried.
Mine came with my tires - I use 50 lbs. with 15" rims per Michelin.
Not exactly. The charts are the MINIMUM inflation pressure to carry the load - and it is always a good idea to use more.

- and if you are doing a trailer, you need to account for front to rear and side to side variation. The best way to do this is to actually weigh each position.
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Old 09-11-2016, 11:24 AM   #8
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Vinnie of Vinnies Notth Bay Repair who specializes in AS recommend 65lb. on the Mitchelin 22575r16E tires.
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Old 09-11-2016, 11:32 AM   #9
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I start at 62 and warm up to 70.
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Old 09-11-2016, 11:40 AM   #10
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We historically have run ours at 60 cold. Just last week I reduced it to 50 on a recommendation from Andrew Thompson at Can-Am. I went looking for his advise as we were getting more rivet shearing than normal and thought it might be the tire pressure. He felt that with our 28' trailer and a ready to camp weight of about 6500 - 6700 lbs, we were running the tires with a bit more pressure than needed.
I haven't run the trailer since but we will be heading out in the next couple weeks for an extended trip and will have a chance to see if it makes a difference.
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Old 09-11-2016, 11:51 AM   #11
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Hi from AZ. . . my Pendleton with 16" & Michelin pkg came from dealer at 65 psi. . .seems to work for me. . .regards, Craig
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Old 09-11-2016, 11:56 AM   #12
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Originally Posted by PSU1981 View Post
I know the max inflation for this tire is 80 psi & with this it has a max load of 2,680 lbs.

AS owners that have this tire -- what P are you running at & why?

We are in Texas where it can get quite hot in the summer --- do you recommend a different ambient temp inflation in summer vs. winter?

We have a 2015 27FB FC that I am upgrading the 15" GYM's to this tire.

Thanks,

Glenn
My answer is based on two valve failures in about a day on the 16" OEM tires and wheels on the Eddie Bauer. At the second failure at 11:00PM on a Saturday night, now with no spare, we, very fortunately, exited the Interstate right at a 24/7 tire repair business. We were served by a very grizzled and seasoned man who said he had been repairing tires for 40 years. After replacing the cracked synthetic value stem with a metal one he had previously salvaged, he asked us what pressure we had been using. I told him 70 pounds, and he replied, "If you want to avoid cracking the stems, use the full 80 pounds." He commented that he has replaced a lot of trailer and light truck valve stems from Michelin, and all were running at pressures below the sidewall recommendation.

When I asked about the vibration and ride issues on the very uneven roads in the area, he looked at me like I was mentally deficient and simply said, "Slow down." He went on to say that in his decades of dealing with tire issues, the underinflation to smooth the ride was one of the prime things he had noticed, only exceeded by worn-out tires.
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Old 09-11-2016, 11:57 AM   #13
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I upgraded to the same tires last October. I went with 80 psi on my 2015 FB Serenity. After my first trip I opened my door to find the controls to my stove top laying on the floor. I am convinced that it was a result of an extremely rough ride. My dealer felt otherwise and said it was a problem AS had identified with the controls themselves. Although the control panel has been identified as a problem, I really felt that 80 was too high. Last week I was watching one of the new LOLOHO videos and Vinnie of Vinnie's North Bay recommended 65psi for these tires(as 80RAM states above). I am going to try 70 in a couple of weeks.
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Old 09-11-2016, 12:06 PM   #14
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The dealer recommended 80. Ran that way for a year. Through this forum I learned that the shake/rattle/roll effects we were seeing after a day on the road may have been partly from the firmness of the tires. Now run at 70 and I'm happier with that. Tire wear on the 16" LT MS/2 is excellent and I see no difference at the lower pressure.
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