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09-15-2018, 09:38 AM
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#1
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Rivet Master
2015 28' Flying Cloud
2018 33' Classic
Cumming
, Georgia
Join Date: Jul 2014
Posts: 518
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Michelin run psi
Just wondering what most of you run with (psi) on your Michelins. We’re towing 2018 Classic 33 with Silverado 2500 HD Duramax. Been using 75 psi but getting some rough riding to trailer.
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09-15-2018, 09:50 AM
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#2
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ObviouslyKnot
Currently Looking...
KAILUA
, HI
Join Date: Nov 2016
Posts: 862
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80 for 17 classic with 16 Michelins. All good.
__________________
James Mileur, HY80-2-Al,
2017 Classic Twin, 2016 RAM 3500 Megacab, ProPride hitch
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09-15-2018, 09:59 AM
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#3
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.-. -...
2017 25' International
Niagara-on-the-Lake
, ON Canada
Join Date: May 2016
Posts: 1,837
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Quote:
Originally Posted by DeltaRon
Just wondering what most of you run with (psi) on your Michelins. We’re towing 2018 Classic 33 with Silverado 2500 HD Duramax. Been using 75 psi but getting some rough riding to trailer.
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GIYF (Google is your friend)
https://www.michelinrvtires.com/refe...tion-tables/#/
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Ray B.
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09-15-2018, 11:48 AM
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#4
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Ready-to-Travel
2012 30' International
Walkerton
, Virginia
Join Date: Dec 2003
Posts: 3,168
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60 lbs is good for over 2000 per axle. My loaded axle weight is 7340 (two axles) so I am running 65 this trip. First trip on my new Mickies.
Pat
__________________
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Somebody, please, point me to the road.
AIR 3987
TAC VA-2
WBCCI 4596
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09-15-2018, 12:11 PM
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#5
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Rivet Master
2015 30' International
2009 27' FB International
2007 25' Safari
Currently Looking...
Greensboro
, North Carolina
Join Date: Aug 2008
Posts: 1,564
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Probably you will need to get it all loaded up as you normally travel, then run over the scales to see what weight you have on each axle. If you want to be very OCD about this, measure the weight on each wheel.
Then look at the chart provided by Adventure.AS and use the appropriate pressures. My guess is you are going to be above 9000 lbs gross weight, thus 65 psi is about right.
__________________
Happy trails and Good Luck
Ms Tommie Fantine Lauer, Greensboro, NC
AIR #31871 KQ3H
www.fantinesvoice.com
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09-15-2018, 12:42 PM
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#6
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ObviouslyKnot
Currently Looking...
KAILUA
, HI
Join Date: Nov 2016
Posts: 862
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That chart is XPS RIB, not what's on AS.
__________________
James Mileur, HY80-2-Al,
2017 Classic Twin, 2016 RAM 3500 Megacab, ProPride hitch
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09-15-2018, 03:35 PM
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#7
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Rivet Master
2020 28' Flying Cloud
Upper St Clair
, Pennsylvania
Join Date: Aug 2011
Posts: 2,943
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I used to run 75-80. But a post by a long time exceptional Airstream dealer recommends 60-65. Reason is as Ron stated limit rough ride and he said the tires can easily take the weight at this lower pressure
__________________
2020 28' Twin Flying Cloud
2021 F350 6.7 King Ranch
USAF Master Training Instructor (TI) & (MTI)- 68-72
Volunteer K9 Rehabilitator & Trainer
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09-15-2018, 03:39 PM
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#8
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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80..and no rough ride nor damage in some 35K with LTX tires.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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09-15-2018, 04:14 PM
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#9
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Rivet Master
2019 25' International
Traverse City
, Michigan
Join Date: Sep 2014
Posts: 594
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72lbs with single axel FC20. Too rough higher and appears to be too much sidewall bulge at 65...
__________________
"Don't let perfect be the enemy of better."
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09-15-2018, 06:12 PM
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#10
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Moderator
2004 30' Classic Slideout
Fenton
, Missouri
Join Date: Mar 2002
Posts: 10,408
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Been running 80 psi for 6 years now on my heavy 30' Classic slide out. No signs of stress to the trailer or ill effects on the trailer. This will most likely be my last season on these tires.
Jack
__________________
Jack Canavera
STL Mo.
AIR #56 S/OS#15
'04 Classic 30' S.O.,'03 GMC Savana 2500
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09-16-2018, 05:18 AM
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#11
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4 Rivet Member
2018 30' Classic
Cumberland
, Maryland
Join Date: Jul 2017
Posts: 335
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65psi
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09-16-2018, 10:25 AM
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#12
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Ready-to-Travel
2012 30' International
Walkerton
, Virginia
Join Date: Dec 2003
Posts: 3,168
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My axle weights were from a cat scale run. Fully packed and loaded for travel, empty black and gray, full fresh water and propane.
I was surprised it came in so low - but I have a 30' International, so there should be some difference from a Classic.
Pat
__________________
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Somebody, please, point me to the road.
AIR 3987
TAC VA-2
WBCCI 4596
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09-16-2018, 11:17 AM
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#13
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4 Rivet Member
2016 27' Flying Cloud
Overland Park
, Kansas
Join Date: Mar 2013
Posts: 365
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68 psi 27' Flying Cloud
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09-16-2018, 02:50 PM
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#14
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Senior Member
2012 27' FB Eddie Bauer
Sparks
, Nevada
Join Date: Mar 2014
Posts: 1,116
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I just got my new 16” for our Eddie Bauer, had planned to run them at 55 lbs, that figures to slightly over 8000 lbs as I read the chart. Am I missing something?
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09-16-2018, 05:59 PM
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#15
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Rivet Master
2018 30' Classic
Thousand Oaks
, California
Join Date: Mar 2017
Posts: 1,637
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Trailer and tire specs on my 18 classic says 80 (cold temp) psi. That’s what I have been running as a result. Also have tire psi sensors to ensure they run at okay psi. I have seen it as low as 78 cold and as high as 90 warm. Trailer has felt great since day 1.
__________________
BigSxyWhtGuy
Follow our adventures!
@airstreamvagabond on Instagram and YouTube
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09-17-2018, 06:47 AM
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#16
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Riveted
2018 33' Classic
Charleston
, West Virginia
Join Date: Mar 2018
Posts: 264
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80psi. Smooth ride and no issues.
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09-19-2018, 04:59 PM
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#17
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Rivet Master
2020 25' Globetrotter
Santa Rosa
, California
Join Date: Feb 2017
Posts: 1,845
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Last week we took our first trip since I installed Ford's TPMS trailer tire sensors on our 2018 30' Classic and integrated them with my 2017 F250. The Michelin LTX M/S tire pressures were set to 78 PSI (cold) before we left, which was close to the Airstream spec of 80 PSI.
On the road with ambient temperature in the mid to high 80's and at about 5000' elevation, I was somewhat surprised to find that pressure spiked at 92-94 PSI across all 4 tires, which concerned me a little. I readjusted the cold pressure to 72 PSI and during the return trip I saw hot pressure readings in the mid 80's, which seemed more appropriate.
I assume AS must take into account the pressure increase which occurs with tire heating when they recommend an 80 PSI cold setting but, OTOH, maybe they figure setting PSI on the high side is better than setting it too low and want to include a margin of safety. My thought is that it might be good to adjust cold pressures to expected conditions. Anyway, having the trailer PSI read out proved to be useful and instructive.
__________________
Mike
2020 25' Globetrotter Twin | 2024 GMC Sierra 2500HD Denali Ult. 4x4 Duramax
400Ah Battle Born lithium battery string | 580W solar (400W roof 180W portable)
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09-19-2018, 05:11 PM
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#18
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3 Rivet Member
2016 28' International
2015 28' International
2013 28' International
Las Vegas
, Nevada
Join Date: Nov 2016
Posts: 234
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80 80 80 80
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09-19-2018, 05:34 PM
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#19
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Rivet Master
2016 28' International
Sioux Falls
, SD
Join Date: Oct 2017
Posts: 576
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72 lbs with 28’ International and zero issues after 7k miles thus far.
__________________
2016 Int. Signature 28' w/ ProPride 3P-1400 Hitch
Mich. LTX w/ 16" Sendels, Centramatics
2017 Ram 2500 4x4 Diesel, CG1800 Bed slide, Leer topper
Better to live one day a lion than a lifetime a sheep. Camp hard, camp often
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09-20-2018, 04:23 PM
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#20
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Half a Rivet Short
2017 30' Classic
2022 Interstate 24X
Carlisle
, Pennsylvania
Join Date: May 2017
Posts: 15,740
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Hi
All tire pressure numbers are for a cold tire. What happens as they heat up is not what the pressure spec is about. Checking pressure on a hot tire is not going to do much good.
The main logic for running below max pressure is that the tread wear is more even and the braking will be a bit better (more road contact). I'm not sure how many of us will wear out the new Michelin LT tires based on treads. Normal end of life for trailer tires is time ( 5 to 7 years) rather than tread or mileage.
The math:
Tires are rated for 50-60,000 miles. Warranty is for 6 years. 60,000 / 6 = 10K miles per year. That's a lot of trailer miles for most of us ....
Bob
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