Nitrogen in tyres

[carvern]

Had new tyres fitted to my car recently and they filled them with Nitrogen, said you never have to check them again, so asked nicely if he would do my bike. Its been two weeks now and psi has remained the same. Any thoughts gents?

[Lonewolf]

Go back to the Home screen and type in the search field, 'Nitrogen', you will find there quite a few threads on the topic.

[carvern]

PSI has not changed at all, the guy at Kwik Fit did it for free.

[viper]

nitrogen gas in tyre is used mainly  in motorsport , it does not expand and contract with changes in temps like compressed air does so its more stable.
Some people think that once in your tyre it never needs replacing, it will still slowly leak from your valve and any rim leaks just like air would

[Winston Smith]

Leaks through the rubber of the tyre as it is a porous material.

[Mogster]

Personaly i used imported Italian air from Noale, it's for the aprilia but the GTR seems to like it too  ::)

[Andy]

nitrogen gas in tyre is used mainly  in motorsport , it does not expand and contract with changes in temps like compressed air does so its more stable.
Some people think that once in your tyre it never needs replacing, it will still slowly leak from your valve and any rim leaks just like air would

And aircraft  :)

[mecki]

Air is nearly 80% Nitrogen anyway, so I find it hard to believe that 20% Oxygen and a few percent other gases should make much of a difference.

[Boomer]

The Oxygen in air causes the rubber to degrade over time.
It's not normally an issue as the tyre wears out way before any serious degradation happens.
The Oxygen in air would make a tyre potentially unsafe after maybe 25 or 30 years.  ::)

The biggest cause of problems is water.
Water vapour gets in there and the water causes rust on the steel cables in the tyre carcass but this also takes a long time so is mostly irrelevant (noticable effects in maybe 10-15 years).
The "major" effect is that water vapour expands when it warms up causing pressure changes.
In practice for a normal use bike the difference is irrelevant (a couple of PSI)
On a race bike where exact pressures can make the difference between winning and losing a race it makes sense.

So, if yer getting Nitrogen in yer tyres, make sure that it is DRY Nitrogen, but my advice is don't waste yer money.
Dry Air is just as good in practical terms but normal air is perfectly fine and is what the tyre was designed for.

[Lonewolf]

How do folk know all this weird shit?  :o

[mecki]

How do folk know all this weird shit?  :o

It's called the internet  ;D

[Rusty]

No Mecki ... they are just weird !   ;D

[Boomer]

Yup, I'm wierd,.... and proud of it.  ;D

For me Nitrogen in tyres is up there with 3000 mile oil changes, tyre balancing beads and most oil additives.
Waste of money, but its your money so go for it if it makes you feel better.  :D

[Kwikasfuki]

I like variance in tyre pressure. In winter I normally drop by about 2 PSI, and in summer I may run slightly higher. Besides, it only takes a few mins to adjust the PSI, so nitrogen will be an expensive luxury