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Old 12-12-2007, 07:42 PM   #1
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1982 31' Airstream310
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Tire pressure on 1982 310


Anyone know the correct tire pressure for a 1982 310?

When I bought it, they were 95 lbs. all the way around. Sounds a little high...

Thanks
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Old 12-12-2007, 07:47 PM   #2
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Take the rig to a Cat Scale and weigh each axle. Once you know the weight per axle you can look on the manufactures tire chart to find the recomended pressure.

It will not be the Max Pressure as printed on the tire sidewall. That is the MAX. the tire can handle and is most likely not what you need.

If you can't find a tire chart repost and we will find it for you.
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Old 12-12-2007, 09:29 PM   #3
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I would use the pressure on the sidewall. It comprehends the construction of the tire, size, etc. Vehicle manufs are terrible about specifiying the correct application for their vehicles. All about money. How cheap they can get out.

If the tire is new, it may be a steel carcass sidewall with three steel belts. I still think a size such as 8r19.5 or 265/70r16.5 would have at least 80psi on the sidewall.

Do the tires appear to be fairly new or very old? Old tires inflated to 95psi are bombs. Proceed with caution. If the rims have a lock ring, don't do anything except mount or dismount.
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Old 12-12-2007, 09:47 PM   #4
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I've been running 90 on our 345 with no problems.
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Old 12-13-2007, 05:58 AM   #5
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I totally agree with HowieE on how to set your tire pressures. When we got our 310 the tire pressures were set to 90+psi. The ride was rougher than...well you know..... Anyway I read through the owners manual and reset all of the air pressures to the numbers recommended and the ride improved dramatically. I still need to try the scale method but haven't had the opportunity as yet.

The pressure listed on the tire sidewall is the MAX setting allowed. Tire charts determine what you should have for your particular application. All tire manufactures will have these charts available for their tires.

Brad
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Old 12-13-2007, 09:12 AM   #6
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There seams to be a supper myth that the pressure on the sidewall of a tire has something to do with the usage. Think of it this way. If you buy scuba diving rear and it is rated for 150 ft. that's a perty clear indication you should not go below 150 ft. That is not to say you have to dive to 150 ft. It is the same with tires. The sidewall rating indicates the MAX. PRESSURE you can inflat them to. If your usage falls short of that there is no reason to inflate the tires to the MAX PRESSURE.

The attached tire manufactures chart, not vehical manufactures, ilistrates how wide a range a tire can be inflated over depending on the load.
http://www.goodyear.com/rv/pdf/rv_inflation.pdf

Note the LT235 70 16 can be inflated from 35 lbs. for a load of 1700 lbs per tire to 110 lbs for a load of 3750 lbs. per tire. I think all would agree if you were only carrying 1700 lbs. and inflated the tires to 110 lbs. you would have a wagon wheel.

Charts are available for every tires size and manufacture. Unfortunately the myth is perpetuated by the fact that almost no tires dealer employees have ever been advised that such charts esist and they just inflate to the MAX.
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Old 12-13-2007, 06:38 PM   #7
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Quote:
Originally Posted by HowieE
Unfortunately the myth is perpetuated by the fact that almost no tires dealer employees have ever been advised that such charts esist and they just inflate to the MAX.
You got that right.

When they are over inflated you can feel every little crack and seam in the road. It was a very unpleasant trip from Savannah to Little Rock on tires that were over inflated by 30 pounds.

Thanks for the chart.

Brad
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Old 12-14-2007, 06:01 PM   #8
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1982 31' Airstream310
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Tire pressure

Quote:
Originally Posted by bkahler
I totally agree with HowieE on how to set your tire pressures. When we got our 310 the tire pressures were set to 90+psi. The ride was rougher than...well you know..... Anyway I read through the owners manual and reset all of the air pressures to the numbers recommended and the ride improved dramatically. I still need to try the scale method but haven't had the opportunity as yet.

The pressure listed on the tire sidewall is the MAX setting allowed. Tire charts determine what you should have for your particular application. All tire manufactures will have these charts available for their tires.

Brad
My tires are 8R19.5.
What pressure did you endup putting in them?

Thanks
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Old 12-14-2007, 06:32 PM   #9
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On our 310 with the same size tire you have, I run 80 psi in the front tires and 70 psi in the rear.

I have a TPMS and when running down the road, depending on the heat of the day, the front will run about 85 to 87 psi. The rear 75 to 78 psi.
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