Nitrogen tire fill

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i30krab

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Finally got around to testing nitrogen in tires on a trip.

I drove 800 miles, speeds 10 - 100 MPH
Temperatures, 65- 118 degrees

Air pressure front wheels 40 PSI before trip, after trip 39 lbs

Air pressure back wheels 38 PSI before trip, after trip 37.5 lbs

I had an extra 300 lbs in the car during this trip!

I think the nitrogen held up extremely well, but of course I don't know how regular air would have done
 
How much did that fill of nitrogen cost you?
An area auto repair/tire shop is advertising nitrogen.
No real advantage for the street using public.
 
dwendt44,

Actually places like Costco are advertising the Nitrogen a selling point. My newest set of tires for my 05 Odyssey are from Costco and are Nitro filled.

What I can confirm is exactly as i30 states ..... the tire pressures stay rock steady. I just checked the tires yesterday and after three weeks ... no loss.


I will add that I feel as if the ride seems a bit more harsh, but perhaps that is because the tires are actually maintaining their pressure.

Oh, as any fyi ... most places using Nitro will put green caps on for you, so if you start seeing more of the green caps around, they are Nitro filled tires.

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I and most of my friends interested in their cars use Nitrogen. Cooler running, less pressure varaiation and best of all not having to ckeck your tyre pressures regularly makes it a no brainer. Red caps and Nitrogen stickers are included.
 
I've seen loss of pressure with nitrogen.

Unless you autox and your super critical on tire pressure the nitrogen thing is a "nice" thing but not a need to have.
 
Last year I bought a valve, gages, and a large cylinder of nitrogen. So far the cylinder has lasted 15 months and I use it on both cars! I think a cylinder refill is about $40.00, I can't remember exactly.
I live in Vegas and we have some wild temp swings and I lost air very quickly using regular compressed air.
 
"Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly (by molar content/volume) 78% nitrogen, (normally inert except upon electrolysis by lightning[1] and in certain biochemical processes of nitrogen fixation), 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases, and a variable amount (average around 1%) of water vapor."

I always pump my tires up with 78% Nitrogen for free.
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I bought a set of performance tires from Rent N' Roll. I paid a few bucks more than I could have bought them on Ebay, but they come mounted and balanced and free plugs and rotations for the life of the tires. Something I used the other day when I had a nail in the tire and had them to rotate them while they were at it.

They also gave me a Nitrogen fill when I bought the tires at no extra cost. Only chrome caps for me. At any rate, on three of the tires I have gotten NO LOSS in two months on these tires in the heat of Biloxi, MS. One tire that had the nail had a slow leak due to the puncture, but that has since been rectified and is holding rock stead. At first I was skeptical, but no longer. This Nitrogen fill is holding up and I still check my tires weekly, in the morning before I roll out of the driveway for the day.
 
Dunno why you guys all seem to have problems with regular air.

Look at Nitrogen and Oxygen on the periodic table. They are right next to each other, and quite similar in molecular size (therefore leakage should be similar)
 
Moisture(water) from the air compressor. This is usually the cause of air pressure fluctuation. I usually get my air from an air compressor that has a water separator. Nitrogen doesn't carry moisture.
 
Shannow,

You have the answer to question with your periodic table.

N is to the left of O ...

Not 'quite' similar at all.

One (I know you know which one) is in fact larger than the other. Smaller molecules escape faster.

Mamala Bay is also right on the money, NO moisture, no fluctuation.
 
Quote:

Cooler running, less pressure varaiation and best of all not having to ckeck your tyre pressures regularly makes it a no brainer.

Click to expand...


But you do still need to check your tires just as often for debris embedded in the tire, etc.
 
I think it is a disservice to the customer if these places are telling people they don't have to check tire pressure at regular interval.

Nitrogen may leak out slower and is probably more predictable than normal air but it will still leak out and will still expand and contract with temperature an the motion of the wheel.

and FYI O2 is about .29 nanometers and N2 is about .31 nanometers or about 6% different.
 
Junior,

From my CHEM 101 days, I know they go into great detail that in the case of this subject 'size does not wholly matter'. Hence the Atomic Number.

No one tried to tell me not to check my tires less, they simply tell you that you will have less fluctuation.
 
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