Nitrogen Filled Tyres

[gaxor]

I notice that some of the more performance oriented tyre dealers are offering nitrogen at approx £2.00/Tyre

Has anyone tried thsi yet, and are the results any good.

I understand it elliminates pressure variations due to temp.

 

[tim court]

try this recent thread.....

http://www.porscheclubgbforum.com/tm.asp?m=25020&mpage=2&key=nitrogen&anchor#25848

 

[Guest]

Tim, the thread you refer to seems a little disjointed (to me!!)
Can't quite work out whether the consensus is that Nitrogen is a good thing or a bad thing. [8|]

 

[Guest]

Good if you are racing, as the pressures are more predictable (no water vapour). Good because it leaks through the metal rims slower. Good, in general, I suppose, but how do you top up the nitrogen pressure on a daily/weekly checking basis ?

Ok, buy a cylinder of nitrogen (pretty cheap, as very commonly used in industry), and stick in garage (or boot, when you take the car out - have you seen how heavy they can be ? !), but then pumping up the tyres could be a bit fraught.

OK, I will stop now, and take a deep, relaxing breath from my white capped cylinder (they are colour coded, for the uninitiated).

 

[Guest]

Fair point about topping up.
What would the implications be of having an initial fill with Nitrogen and then top ups with compressed air on a garage forecourt? ( Or are we just getting too complicated now???)

 

[tim court]

I thought the disjointed thread (there is another somewhere as well) concluded that the effects were so marginal that it was a complete waste of time.

Bit like driving around with an ice cube sellotaped near the air intake to get denser air in the combustion chamber.

 

[Guest]

What would the implications be of having an initial fill with Nitrogen and then top ups with compressed air on a garage forecourt?

Well, you would be replacing Nitrogen with Nitrogen/Oxygen (plus traces of H2O, Neon, Argon etc.) - Ok, lets just call it air - so what would be the point of the initial Nitrogen only ?

 

[Guest]

That's basically what I was getting at. So there's no real point then, unless the garages who charge £2.00 for an initial fill, also charge 10p for each top-up. Hhmmmmmmm. [8|]

 

[Diver944]

I think the main worry would be that one tyre topped up with an air/nitrogen mix would expand at a different rate to the other three on pure nitrogen. Leading to a potentially dangerous situation with one tyre at a different hot pressure to the other three.

 

[Guest]

In an F1 car, this would be noticeable; in a road car, even on the track, this would be hard to tell. Apart from chance to say ' I lost it because....'

 

[gaxor]

OK, I will stop now, and take a deep, relaxing breath from my white capped cylinder (they are colour coded, for the uninitiated).

I assume you are feeling less "Nox"ious now - stop giggling [][]

 

[Guest]

I assume you are feeling less "Nox"ious now - stop giggling

Doh !

(Actually, white is oxygen - can't remember what nitrous oxide is).

 

[Guest]

Eh...
Why don't you use helium..........
It'll make the wheels lighter.......[]
Peter