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10-24-2011, 08:41 PM
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#1
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Rivet Master 
1970 27' Overlander
Espanola
, Full Timer
Join Date: Jun 2007
Posts: 1,753
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How many pounds of air do the tires....
Hi All, I was polishing this PM and looked down and noticed one tire was a little low looking...and then I asked myself, Darn you have forgotten the amount of air to inflate with...does anyone know the air pressure for tires under the Airstream?
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10-24-2011, 08:50 PM
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#2
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Moderator

2017 26' Flying Cloud
Alamo Heights
, Texas
Join Date: Aug 2006
Posts: 8,748
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It depends on whether you have load rating C or D (or E) tires. I run the max 50 PSI in my load-range C ST radials, which gets me enough capacity for any 3 tires to support the rated max gross weight of my Argosy.
__________________
— David
Zero Gravitas — 2017 Flying Cloud 26U | WBCCI# 15566
He has all of the virtues I dislike and none of the vices I admire. — Sir Winston Churchill
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10-24-2011, 09:33 PM
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#3
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Rivet Master 
2019 27' Flying Cloud
Albuquerque
, New Mexico
Join Date: Nov 2005
Posts: 1,917
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60 to 65 PSI in load range D tires.
It will be embossed into the sidewalls of your tires.
__________________
Ken L 2019 Flying Cloud 27FB
2020 GMC Sierra 1500 Crew Cab 6.2L Max Tow Four Corners Unit WBCCI #5783
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10-24-2011, 09:54 PM
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#4
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4 Rivet Member 
Grand Prairie
, Texas
Join Date: Dec 2009
Posts: 357
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Hi Airbuckled
The proper air pressure is stamped in the tire sidewall.
Here's a video that should help you out.
Michelin North America RV Videos and Demos Page
Good luck!
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10-25-2011, 03:15 AM
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#5
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Rivet Master 
1970 27' Overlander
Espanola
, Full Timer
Join Date: Jun 2007
Posts: 1,753
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Great! Thankyou much for the tips and advice. I bookmarked also the video to boot.
We have a scrap metal yard here in this town and will stop by there to see if they will weigh the Airstream. And furthermore I have a good friend who deals tires both new and used...A brand new set of tires for us would probably cast an arm and a leg, but thats better than actually loosing an arm and a leg in an accident.
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10-25-2011, 06:15 AM
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#6
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Rivet Master 
1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg
, Illinois
Join Date: Jul 2005
Posts: 2,944
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Actually, the pressure rating marked on the side of the tire is the maximum pressure the tire is rated at. You can use this pressure to achieve the maximum load rating of the tire.
If you are not going for the maximum load, you do not need to use this much pressure. At these pressures, the ride will usually be pretty harsh. If you know how much load will actually be on each tire, you can go to the manufacturer's load chart to find out how much pressure you actually need.
Car manufacturers test their cars and find out how much pressure gives the best car performance. The recommended pressures are inside the front door on the side.
If you have the time, you could do the same for your rig. Lower pressures will give the Airstream a softer ride and save wear and tear on the rig. Too low pressures will overheat the tires and give you blow outs.
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10-25-2011, 06:26 AM
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#7
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4 Rivet Member 
2004 30' Classic Slideout
Between Here
, And There
Join Date: Feb 2005
Posts: 379
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Tire Pressure
Here is a link to some very good tire information from Goodyear. Info is relevant to all tire brands. Covers weight distribution of RV and tire inflation.
http://www.goodyearrvtires.com/pdfs/tire-care-guide.pdf
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10-25-2011, 06:39 AM
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#8
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Rivet Master 
1966 24' Tradewind
1995 34' Excella
Lynchburg
, Virginia
Join Date: Jun 2006
Posts: 4,270
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Terry
Thanks for posting the Michlin video. There is some real good information here. I learned a lot.
Dan
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10-26-2011, 02:37 AM
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#9
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4 Rivet Member 
Grand Prairie
, Texas
Join Date: Dec 2009
Posts: 357
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You Are Very Welcome AB and TD
Over my long history of over the road adventures, I have enjoyed the best luck with aways keeping my tires inflated to the maximum sidewall load pressures. Better handling, better over all fuel and tire mileage as well.
I guess thats what has helped me and how come I got to become an antique~!
Many Happy Trails To You!
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10-26-2011, 11:05 AM
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#10
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Rivet Master 
2019 27' Flying Cloud
Albuquerque
, New Mexico
Join Date: Nov 2005
Posts: 1,917
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TRFour Gets My Vote
Thanks for being the voice of reason (VOR) and advocate of the KISS principle. The videos and tables are nice, but on an ST load range D trailer tire the result is nearly always the same, 60 to 65 PSI cold if your Airstream is loaded for adventures on the open road.
It's so simple. You know the gross weight of your trailer. Divide it by four (if you have two axles). Look at the max load and the recommended pressure embossed on the sidewall. Voila, 60 to 65 PSI!
This dictum is not true for the folks that are running LT load range E tires, but that's another thread unto itself.
__________________
Ken L 2019 Flying Cloud 27FB
2020 GMC Sierra 1500 Crew Cab 6.2L Max Tow Four Corners Unit WBCCI #5783
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