N2 in tyres

[Adrian2627]

We used to do this when I was in the RAAF but got over it because it really didn't make a lick of difference. Way more hassle than it's worth even when you don't have to pay for it. For $24 I wouldn't even waste the energy to think about it.

[bonski]

http://forum.liberty.asn.au/viewtopic.php?t=2064

[SkoobyGT]

Lol
Me too, crock in my opinion.

Give it a few years and they won't have it, because people will have realised it was an April fools joke that people fell for and they thought they could make money on

[Resonate]

I'd love to try it but unfortunately i am a loyal customer to air... You know, the whole it's free thing and all.

[Moi]

Yeah put me down in the tap water category as well

I'm yet to be convinced about nitrogen in road car tyres...however, there are alot of passionate ppl out there who do also swear by it.

So the RAAF stopped using nitrogen in aircraft tyres? If so, that's interesting as I thought commercial aircraft use it due to safety concerns. Does that mean the RAAF isn't concerned about safety (j/k)

Cheers
Teck

[Spec B Wgn]

N02

[Moi]

I'd much prefer N2O (in cars and to inhale)

[Roddez]

They still use nitrogen in aircraft tyres. They also use nitrogen in other aviation related applications such as oleos (Special name for aircraft suspension), accumulators and other such devices.

There are a couple of reasons for this.

1. Nitrogen is sold in bottles under high pressure. This makes it easier to fill things that need to operate under very high pressure. The last accumulator that I saw filled was filled to 750PSI. Try doing that with your normal compressor.

2. Air, contains lots of nitrogen and also oxygen. Oxygen can be quite flammable, especially when under pressure or exposed to heat and oil. In the tyres on large aircraft, there may be oil or grease in the tyre. As such, after a landing (gas compressed and heated by compression and the nice carbon brakes) if the tyre was filled with plain old air, under high pressure, there is a danger of an explosion.

3. Oleo legs on aircraft contain oil and nitrogen. Again, the idea is that air may contain too much oxygen, and when compressed on landing, the mixture would be too dangerous and it could explode.

My take on this whole nitrogen in car tyres is that it is a con, plain and simple. Some garage owner deduced that he can get a bottle of nitrogen for $A and inflate X tyres for $Y and make $Z in profit.

Other people may suggest that this is just a stupid tax.

[jp928]

Oxygen is NOT flammable - it is NECESSARY to enable flammable things to burn! By itself it will do nothing , only in combination with something else will combustion take place - like petrol, oil, rubber, wood etc. Nitrogen will not enable anything to burn, which is why its used in aircraft instead of air or oxygen. Its also a bigger molecule, therefore less able to seep through tyre rubber, and the tyres should therefore hold pressure longer. It also expands less with heat, so tyre pressure is more stable.
On these lines, whats the recommended pressure for Potenzas on GTB 18" wheels - lable says F33 R30psi - anybody have any different experiences please?
thanks,
jp