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Old 09-04-2012, 10:38 PM   #1
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More about tire pressures for 320rs

Installed TPMS system on our new 320rs today and I know there has been a lot of discussion elsewhere about tire pressures.
These radials are max rated for 80lbs but were delivered with 70psi. Is this the correct pressure. On a positive note they are nitrogen filled.
What do 320rs owners use for their fifth wheels?

Thanks
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Old 09-04-2012, 10:41 PM   #2
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80 psi COLD as stated on the tire sticker located on the left side near the propane access door, next to the VIN sticker.
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Old 09-04-2012, 11:30 PM   #3
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Thanks that's what I thought. I don't know why they under filled by 10 lbs.
Of course I don't know why they failed to hook up the drain pipe for the washing machine so that it dumps water into the flooring instead of the gray tank or hooked up the audio for the TV incorrectly so there would be no sound.
Need to give them a call about these and several other problems. The washer plumbing will be a major access issue.
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Old 09-22-2012, 06:10 AM   #4
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Curious where you go to top off a nitrogen filled tire?
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Old 09-22-2012, 09:12 AM   #5
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Dru R, Discount Tire in my area can fill with nitrogen. But you can just use regular air.
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Old 09-22-2012, 10:53 AM   #6
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Originally Posted by Av8orLou
Dru R, Discount Tire in my area can fill with nitrogen. But you can just use regular air.
You can Google for stations in your area that handle the nitrogen. There is one tire store close to me that carries the nitrogen but it would be a major problem to get the Columbus in there in order to access the nitrogen filling station. I have a pancake air compressor so I use regular air to top off the tires and not have to worry about nitrogen.
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Old 09-22-2012, 12:26 PM   #7
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My take is if your truck tires don't have nitrogen, don't waste your time filling the RV tires with it. When you stop for air, you have to check ALL of the tires. Not too many places that sell tires have a parking lot big enough to allow for a large RV. I have a small 120volt air compressor also. Comes in handy for blowing out water lines in winter too. I'm sure nitrogen helps out, but is it enough of a benefit in real world experiance for you? For commercial fleets yes. For one individual, I doubt it.
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Old 09-22-2012, 01:50 PM   #8
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Curious where you go to top off a nitrogen filled tire?
Anywhere! Regular air is 70% nitrogen so why worry about the remaining 30% of other gasses?
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Old 10-02-2012, 10:53 PM   #9
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Originally Posted by TheEdge View Post
Installed TPMS system on our new 320rs today and I know there has been a lot of discussion elsewhere about tire pressures.
These radials are max rated for 80lbs but were delivered with 70psi. Is this the correct pressure. On a positive note they are nitrogen filled.
What do 320rs owners use for their fifth wheels?

Thanks
Just wanted to put in my 2 cents. I believe you are better off keeping the 70 psi in your tires. If your doing any long distance towing, the tires will heat up quite a bit, and the pressures will expand. I never set my tires at the max air pressures. I always leave room for the heat build up.
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Old 10-02-2012, 11:06 PM   #10
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Originally Posted by Sporoo View Post
Just wanted to put in my 2 cents. I believe you are better off keeping the 70 psi in your tires. If your doing any long distance towing, the tires will heat up quite a bit, and the pressures will expand. I never set my tires at the max air pressures. I always leave room for the heat build up.
I think the max tire pressure rating takes into consideration of heat/air pressure build up.


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