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Thread: Nitrogen Tyre refills

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    Regular Member Dane-10's Avatar
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    Default Nitrogen Tyre refills

    Any one had this done? Do you see any benefits over standard Air?

    Just been down to my local costco, and they do it for free just for been a member!, Dont even have to buy tyres from them, can just do your existing tyres. They also do it properly from standard air by deflating then refilling a couple of times to dilute what's in the tyre already.

    Well worth trying it imo if its free Told me to call down in 4 weeks to have them done again (deflated inflated) then return ever 8 weeks for a pressure check/top up completly free. Im there at least once per month anyway so no harm for me to just hand keys over, go shop enjoy a hot dog and collect car when done

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    Full Member Penfold101's Avatar
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    Air is over 70% nitrogen anyway, and it makes absolutely no difference whatsoever dude. But like you say, it's free...

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    Regular Member montyfert's Avatar
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    wont nitrogen find leaks air dosent .

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    Regular Member lee gsi's Avatar
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    Regular Member Paulwr's Avatar
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    Seems it does have advantages:

    Q: Is there any advantage to using nitrogen instead of compressed air in tires? Will I notice improved fuel economy or a smoother ride? Will my tires last longer?

    A: Sort of. From the top: Air is 78 percent nitrogen, just under 21 percent oxygen, and the rest is water vapor, CO2 and small concentrations of noble gases such as neon and argon. We can ignore the other gases.

    There are several compelling reasons to use pure nitrogen in tires.

    First is that nitrogen is less likely to migrate through tire rubber than is oxygen, which means that your tire pressures will remain more stable over the long term. Racers figured out pretty quickly that tires filled with nitrogen rather than air also exhibit less pressure change with temperature swings. That means more consistent inflation pressures during a race as the tires heat up. And when you're tweaking a race car's handling with half-psi changes, that's important.

    Passenger cars can also benefit from the more stable pressures. But there's more: Humidity (water) is a Bad Thing to have inside a tire. Water, present as a vapor or even as a liquid in a tire, causes more of a pressure change with temperature swings than dry air does. It also promotes corrosion of the steel or aluminum rim.

    If I ever need to top off a tire when I'm out on the road, I'll always briefly depress the tire chuck's valve with my thumbnail and vent some air. If my thumb gets wet, there's water in the line. Some gas stations don't do a very good job of keeping the humidity out of their air system. I don't even like to use a water-based tire-mounting lubricant unless I can let the tire bake in the sun for a couple of hours before I air it up and seat the bead. I've dismounted tires (not mine) that had several quarts of water inside—probably from a compressed-air hose that collected water and was never purged properly.

    How is water relevant to a nitrogen discussion? Any system that delivers pure nitrogen is also going to deliver dry nitrogen. Filling tires with nitrogen involves filling and purging several times in succession, serially diluting the concentration of oxygen in the tire. This will also remove any water.

    It's certainly simple, although time-consuming, for a tire technician to fill and bleed tires. But most shops use a machine that not only generates almost pure nitrogen by straining the oxygen out of shop-compressed air, but will also automatically go through several purge cycles unattended. Some shops have been charging as much as $30 per tire for this service. I think that's too much. If you're buying a new tire, it should be far less. Still, the nitrogen generator, filling system and technician's time aren't free—the dealer is entitled to some return for that.

    So, to answer your specific questions: With nitrogen, your tire pressures will remain more constant, saving you a small amount in fuel and tire-maintenance costs. There will be less moisture inside your tires, meaning less corrosion on your wheels. You will not be able to feel any difference in the ride or handling or braking, unless your tire pressures were seriously out of spec and changing to nitrogen brought them back to the proper numbers.

    Read more: Nitrogen vs Air In Tires - Why Nitrogen in Tires - Popular Mechanics

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    Regular Member montyfert's Avatar
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    nah me wrong nitrogen attoms are bigger than air .just googled it

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    Full Member Mark Evison's Avatar
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    I have it in mine! It gets done automatically, Been told it saves fuel but who knows lol
    Vauxhall Vectra C March 2006 - Dec 2010
    Vauxhall Insignia Dec 2010 - Jan 2016
    Vauxhall Astra VXR Jan 2016 - Present

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    Regular Member Dane-10's Avatar
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    Reviews are so mixed but like i say it was free lol. Most reviews seem to be for it rather than against it though. Which is a good thing. Il try owt for nowt! Good old Yorkshire lad.

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