Nitrogen in tyres

[Magoo]

Is anyone using nitrogen in tyres, especially if doing a lot of motorway driving. Nitrogen is less sensitive to temperature than compressed air, so maintains tyre performance and reduces wear. So more Kms per set of tyres.

[lowcool]

gday magoo
used to be a nighmare when the V8 supercars came to town.impossible to find any at boc

[Magoo]

gday Lowcool.
yes, it is motor racing trick for tyre performance, the V8 's teams would buy everything BOC had in stock.
Did get a chance to go to the cricket in Adelaide?. Don't mention the Black Caps, they are still learning how to play. Cheeez

[DTLarca]

Is anyone using nitrogen in tyres, especially if doing a lot of motorway driving. Nitrogen is less sensitive to temperature than compressed air, so maintains tyre performance and reduces wear. So more Kms per set of tyres.

All gases have the same thermal coefficient of expansion.

Avogadro's Law gets violated otherwise.

[mad fridgie]

I am a fan of nitrogen in my tyres i tend to have 79% in mine!

[DTLarca]

I am a fan of nitrogen in my tyres i tend to have 79% in mine!

And if any higher it's likely your wheels have been rusting pretty heavily :)

[Magoo]

So what about alloys, as in mags

[desA]

Try Helium.

[Spencer.Guy]

I am a fan of nitrogen in my tyres i tend to have 79% in mine!

Then I suppose you go and ruin it and put 21% oxygen in as well!!

.

[sedgy]

well if its good enough for airoplain wheels its good enough for my car,
sedgy

[Quality]

There was a technical artical in last weeks motorcycle news about this and the conclusion was that unless you are reaching temperatures that a race tyres reache (slicks) then there are to many other variables for road users for it not to make any difference at all

[mad fridgie]

Then I suppose you go and ruin it and put 21% oxygen in as well!!

.
Very Very close, my secret is out, and a bit of H2O vapour, CO2, and few other rare gases.

[Spencer.Guy]

Very Very close, my secret is out, and a bit of H2O vapour, CO2, and few other rare gases.

Apparently Tesco do "Off the shelf" CO2 if you need any..

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[mad fridgie]

Apparently Tesco do "Off the shelf" CO2 if you need any..

.
I did try tesco, but bulk supplies only!

[monkey spanners]

A farmer i know put water in his tractor tyres to increase weight and hence traction. Should of seen him try and drive it after a frost :D

Lots of lorry tyres are nitrogen filled now. I have read that the oxygen leaks through the tyre wall so nitrogen keeps a more consistent pressure. Also less moisture would be another factor.

[joshuatan]

How nice, i think you can use it as fire extinguishers, just bring along a long pressure hose which can adapt to the charging valve and all four tyres are ready to use for putting out a small fire in an emergency....

[mikeref]

I did try tesco, but bulk supplies only!
There was pressure from higher up to reduce stock volume,Apparently found to have oil contamination so wouldn't use it for tyres.

[Argus]

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The obvious point (in the UK, that is, can’t comment on other countries) is that material changes to the manufacturers' specifications (i.e. inflators other than air in tyres designed for inflation with air) would need to have the approval of your insurance company.

You could be driving an uninsured vehicle. That's an offence in UK law and could lead to a lot of problems in the event of an accident

Run it past your insurers.

.

[chilliwilly]

I've heard that a lot of the high performance road cars use nitrogen in their tyres instead of air. Audi dealers charge eighteen quid per tyre to inflate. Talk about money for old clog irons, the next i see my neighbour with a flat tyre I'll offer him a discounted deal.

[lowcool]

gday Lowcool.
yes, it is motor racing trick for tyre performance, the V8 's teams would buy everything BOC had in stock.
Did get a chance to go to the cricket in Adelaide?. Don't mention the Black Caps, they are still learning how to play. Cheeez


gday magoo
couldnt get a free seat,ended up working at the cathedral pub on the first and second day.who said aussies are piss heads after watching the poms and the army we could do well to take a leaf out of there book as well as their cricket finesse :off topic::off topic::off topic::off topic::off topic::off topic::off topic::off topic::off topic:

i maybe mistaken but i reckon the pits use nitrogen to run the tools as well,beats dragging round compressors and air driers i suppose

[Robert Hilton]

well if its good enough for airoplain wheels its good enough for my car,
sedgy
It's used in aircraft for safety reasons, not for improved tyre performance. A/c wheels are magnesium and if there is a brake fire, the nitrogen in the tyre ensures there is no extra oxygen to feed it when it bursts.

[Quality]

I fly a light air craft and from some study for my exams I found the reason that aircraft use nitrogen is so no moisture is present which would freeze at high altitude;)

[Robert Hilton]

The lack of moisture being good for anti-corrosion which is an advantage with magnesium rims. I've never heard of the freezing problems in all my training as an aircraft technician. I have worked on all sorts ranging from fast jet to civil passanger, all had one thing in common, nitrogenin the tyres.

[chilliwilly]

Probably a similar reason to pressure testing pipework with Nitrogen, instead of *****. The low boiling point of Nitrogen also maintains tyre pressure when the plane is descending from a high altitude, and severe low temperatures. Normal air might not expand enough in time, and the tyres might be flat when it lands. Along with the other reasons as well.

[SeanB]

The nitrogen in aircraft tyres is that it is easy to ensure that there is no water in there, as it generally is made by allowing the cryogenic liquid to boil in a pressure vessel that fills the cylinders, thus there is no possibility of getting water in vapour or liquid form in the tyre. If water is present it can change phase when heated, increasing the pressure in the tyres unequally, affecting stopping ability of the brakes, which assume each tyre is equally inflated in non ABS systems, or that all wheels in a bogie brake equally in a multi wheeled system. Tyre life on aircraft is very dependant on pilot skill, I remember quite often helping to put nice new tyes on, and a rookie pilot doing one hard landing and taking 16 plies off all of them at once. Then there was the plane landing ahead in the pattern, where us in the circuit heard him land, without needing the radio...... A little cross wind is bad for tyres.

[chilliwilly]

Nice new tires... I take it they were they military aircraft or new civilian aircraft then?

[SeanB]

Yes, the proof that a brick will fly if you apply enough power...... Of course the side issue is that you need a lot of fuel to do so, and pumping 6000l by hand is not nice when the source is a 200l drum, and a manual 1l per stroke pump is all that works.......

[lowcool]

should be using nitrogen to force the fuel out

[Magoo]

seanb.
change hands at one hundred.

[SeanB]

More like change Appy at 100.......... At least working pump was better than wrangling the barrels off the truck without having a working crane, or having a tyre carcass to act as a shock absorber if you just dropped them off the side.

[Magoo]

back to the original post idea. To all the protaginists [ spell check ] I get 22% more Kms per set of tyres using nitrogen. I do not fly at 5K meters above sea level, but do a lot of motor way driving.

[Robert Hilton]

I find that difficult to believe. I work for a haulage firm and we tried nitrogen, the results were what I said they would be, negligable. What we found was that those with "nitrogen" in the tyres checked the pressures more often than those without. If the pressures were too low they would turn up at the workshop to get them topped up. That increased tyre life. What we didn't tell the drivers was that half of the trial vehicles had normal air in the tyres.