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Old 09-23-2015, 08:39 AM   #1
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2004 22' Interstate
Collins , Mississippi
Join Date: Sep 2015
Posts: 1
Tire Pressure 2005 Interstate

What pressure should the tires be for best comfort ride for a 2005 Airstream Interstate Sprinter. I have new Firestones 225/75/R16

The panel on the front seat says 55 Front and 80 Rear. Rides pretty rough

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Old 09-23-2015, 12:10 PM   #2
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2006 22' Interstate
Normal , Illinois
Join Date: Jan 2009
Posts: 10,781
I would check with whoever installed your tires.

Enjoy your Interstate.


🏡 🚐 Cherish and appreciate those you love. This moment could be your last.🌹🐚❤️
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Old 09-24-2015, 08:44 AM   #3
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Berkel-Enschot , Noord-Brabant
Join Date: Apr 2014
Posts: 26
I am able to calculate it with use of my made spreadsheet.
In this I use an even saver formula then the European tyre-makers use, wich on its turn is saver then the American tire-makers use.
I also add a reserve for maximum reserve with still acceptable comfort and gripp.

But need more details, and those are next.

From Vehicle ( I asume motorhome because of the comfort you want, but correct me if I am wrong).
Weights on seperate ends if loaded the way you use it, so with persons and loads in it.
Configuration = number of axles rear and number of tires on the road.
Speed you wont go over for even a minute in your use.

From tires next:
Maximum load of tires or loadindexes. for single and dual.
At pressure or loadrange ( probably LR D).
Maximum allowed speed of tires , mostly give as letter, N is up to 140km/86m/h and Q and higher use 160km/99m/h as speed for wich maximum load is calculated.

Give that and I will give picture of my filled in spreadsheet with some more information.
Will give a highest pressure to fill with still comfort and gripp.
But also a lowest pressure for the maximum speed you give at wich tires still are save , so wont get to hot and damage by driving that speed.

Greatings from a Dutch Pigheaded self-declaired tirepressure-specialist.
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