[QUOTE=Hockey,Dec 15 2005, 06:21 PM]Nitrogen?????

 

I put Helium in my tires and I swear, the car weighs 10 lbs less.

 

I'm gonna use NOS!!!!!!

 

Here's a good link that discusses the ideal gas law.

NOTE that "r" is a CONSTANT!

Can't understand why anyone thinks Nitrogen in the tires is a scam. Just because it violates the laws of physics ...

 

Neon's under the car make it lighter too.

My gas miledge went up after installing neons.

 

I don't think anyone is saying it's a "scam". Some people may actually put a lot of faith in such stuff and I suppose it's their right to do so, but to replace the 20% of the tire gas which 99.99999% of the rest of the general motoring world runs each and everyday and have absolutely no problems doing so, is verging on comical and obsessive.
My example of Helium was a joke but seriously, most people will know that helium would make a difference in that it tends to "permeate" rubber and plastic quite alarmingly fast as compared to plain old air. That is to say, using it would find you needing to fill up frequently as it tends to disappear quickly out of a totally sealed container like a balloon or tire.
Now, given that Nitrogen is not that far off from Oxygen (which is the bulk of the remaining 20% of air) in terms of atomic weight (unlike Helium, which is a much smaller molecule), the infiltration of it, in and out of rubber and the effect of temperature upon it, would be minimal. Granted, Oxygen can have an affect on the molecular stability of the tire itself (oxidation can't happen if O2 isn't around), but come on, how often have we heard of tires rusting out before they are worn out?

 

Try Hydrogen it's works even better

I swear my car is flying now!

 

I'll bet your car is just the BOMB.

 

The deal about putting nitrogen in your tires is that when you put 'regular air' in your tires, there's always some moisture inserted as well.

When you drive your car on the limit and your tires get very hot, the moisture expands much more than a dry gas would do which may increase tire pressure unevenly and may influence the behaviour of the car.

I've read it is done in F1 and Le Mans and it obviously seems rather academic for a S2000 :-) I don't know what the advantage is of nitrogen over putting dried regular air in tires (drying regular air is a pretty simple process).

It was done free of charge by the dealer upon delivery of my car and is also supported by all major tyre centers in my vicinity. Whether a tire is filled with nitrogen can be recognised by the green caps on the tire's valves (which doesn't really look all that great).

I'm a bit suprised this isn't common practice in the USA but maybe that's the advantage of living so close to the N

 

Just as European S2000s in the early model years got a Honda recall for the oiljet bolts, your tire shops may deem that your kind of driving style deemed it advantageous to put N2 into your tires. Honda did not deem it necessary to invoke a similar recall here for those oiljet bolts, just as tire shops here don't see the need to put N2 into our tires.
Because of the way pure N2 is "bottled", most of the moisture is removed, however, what moisture that accompanies simple compressed air is not significant enough for a street driven car. I'm sure how much moisture in tires would come into play even for an S that is typically tracked.