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Old 04-30-2013, 06:31 PM   #1
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Nitro filled tires.

Our trailer has nitro filled tires. When I picked it up the tech that did the PDI stated that they had just been gauged to the correct pressure. When I checked them today I found they had 60 psi instead of the 50 recommended on the sticker. I'm checking with a dail type tire gauge. Do I need a special gauge to check these? If not should I lower them to 50? First time with Nitro filled on any vehicle.
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Old 04-30-2013, 06:36 PM   #2
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Mine came the same way. When I put my tpms on I realized they were over inflated and reduced them to 50psi cold. I will be curious what others have to say. I did notice on last trip the pressure readings went from 50 psi at beginning of trip to almost 60psi after warming up.
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Old 04-30-2013, 06:43 PM   #3
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As far as I know, no special gauge is necessary. Make sure to check the tires COLD to get an accurate reading. suspect you have 'D' rated tires due to the low(er) pressure. If 50PSI is your max, keep it at that. Relieve pressure if necessary. There has been lots of discussion on nitro filled tires...here on FRF along with various sports car message boards. I think nitro filled tires trickled down from the aviation community where altitude would freeze water molecules in the tires and that's not a good thing for high speed balance. The general consensus is that nitrogen for land based vehicles is good for it's 'dry' component(lack of H2O)in the fill, but totally a sham. Good ol' air from your gas station will be sufficient. Good luck with the new unit!
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Old 04-30-2013, 06:51 PM   #4
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Originally Posted by kb4srn View Post
Our trailer has nitro filled tires. When I picked it up the tech that did the PDI stated that they had just been gauged to the correct pressure. When I checked them today I found they had 60 psi instead of the 50 recommended on the sticker. I'm checking with a dail type tire gauge. Do I need a special gauge to check these? If not should I lower them to 50? First time with Nitro filled on any vehicle.
Just don't hit any holes with nitro in your tires. They will go BANG!
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Old 04-30-2013, 07:06 PM   #5
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As you know air is about 80% nitrogen just removes the oxygen & misc.... No differences if you want to keep just nitrogen you have to find a tire or car dealer that has the "machine" otherwise just add regular air as needed......... The word is it is supposed to give better gas mileage & have the tires last longer..... Our Subaru had nitro-fill tires.... that set lasted 32K now we just use regular old air & have 45K so far on these tires & the gas mileage is the same........... You use the same tire gauge & treat the tires the same way you normally do..........

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Old 04-30-2013, 07:18 PM   #6
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The only advantage I can see to nitrogen filled tires is they don't seem to lose air pressure. Mine have been at 80 psi for over a year now and that includes sitting on the storage lot for 4 1/2 months during the winter.
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Old 04-30-2013, 09:17 PM   #7
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I'll let them down to 50 psi tomorrow. Meanwhile, Old Coot, I'll make sure not to jar them. Thanks for the advice.
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Old 04-30-2013, 09:27 PM   #8
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Just don't hit any holes with nitro in your tires. They will go BANG!
That's it. I'm going to bubble wrap my tires now.
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Old 04-30-2013, 09:34 PM   #9
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Nitrogen in tires is a big dealer upsell. Will cost upwards of $30 to check and fill a camper rig.
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Old 04-30-2013, 09:35 PM   #10
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That's it. I'm going to bubble wrap my tires now.
If they have nitrogen in them, save the bubble wrap, but if they're filled with nitro like the OP originally posted, I would just stay away from them or only pull the trailer on VERY smooth roads.
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