Are there any benefits other than a more stable 
tyre teperature, if you use Nitrogen instead of
air to pump up your tyres?

Bod

Bod wrote:

> Are there any benefits other than a more stable tyre teperature, if
> you use Nitrogen instead of air to pump up your tyres?

Not in general road use.

Racing might see some gains, but it's probably marginal unless you're
competing at the highest levels.

-- 
Paul - xxx

'96/'97 Landrover Discovery 300 Tdi
Dyna Tech Cro-Mo comp

Bod  gurgled happily, sounding much like they were
saying:

> Are there any benefits other than a more stable tyre teperature, if you
> use Nitrogen instead of air to pump up your tyres?

Your fuel economy may be slightly better, due to the decreased weight of 
your wallet.

In article , Bod says...
> 
> Are there any benefits other than a more stable 
> tyre teperature, if you use Nitrogen instead of
> air to pump up your tyres?
> 
Only to the person providing the service.


-- 
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

Paul - xxx wrote:
> Bod wrote:
> 
>> Are there any benefits other than a more stable tyre teperature, if
>> you use Nitrogen instead of air to pump up your tyres?
> 
> Not in general road use.
> 
> Racing might see some gains, but it's probably marginal unless you're
> competing at the highest levels.
> 
Yes, I've noticed that F1 etc, use pure Nitrogen.
Considering that standard air is 79% Nitrogen, I 
can't see that the extra N would make that much 
difference to a road car.
Aeroplane tyres use N for different reasons though.

Bod

"Bod"  wrote in message 
news:7l7pouF3777q3U2@mid.individual.net...
> Are there any benefits other than a more stable tyre teperature, if you 
> use Nitrogen instead of
> air to pump up your tyres?
>
> Bod

It's used to stop the tyre slowly deflating over a period of time.  Air gets 
absorbed by the tyre over time and you lose pressure.  Using Nitrogen stops 
this, meaning your tyres *should* remain at the same pressure.

Whether this works is another thing!

slider wrote:
> "Bod"  wrote in message 
> news:7l7pouF3777q3U2@mid.individual.net...
>> Are there any benefits other than a more stable tyre teperature, if you 
>> use Nitrogen instead of
>> air to pump up your tyres?
>>
>> Bod
> 
> It's used to stop the tyre slowly deflating over a period of time.  Air gets 
> absorbed by the tyre over time and you lose pressure.  Using Nitrogen stops 
> this, meaning your tyres *should* remain at the same pressure.
> 
> Whether this works is another thing!
> 
> 
I think it does, because Nitrogen molycules are 
larger than oxygen.
The thing is, if tyres are checked weekly, this 
really becomes a non issue.

Bod

"slider"  gurgled happily, sounding much like they were
saying:

> It's used to stop the tyre slowly deflating over a period of time.  Air
> gets absorbed by the tyre over time and you lose pressure.  Using
> Nitrogen stops this, meaning your tyres *should* remain at the same
> pressure.

Sounds like a good excuse not to check your tyres regularly, conveniently 
forgetting it's not just pressure that should be checked.

In article <hcmd89$l99$1@aioe.org>, slider says...

> It's used to stop the tyre slowly deflating over a period of time.  Air gets 
> absorbed by the tyre over time and you lose pressure.  Using Nitrogen stops 
> this, meaning your tyres *should* remain at the same pressure.
> 
Tyre pressures are supposed to be checked weekly. I've never had a 
healthy one deflate sufficiently between checking, even when not weekly, 
that it would be more than 1-2 PSI.



-- 
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

In article , Adrian says...
> 
> "slider"  gurgled happily, sounding much like they were
> saying:
> 
> > It's used to stop the tyre slowly deflating over a period of time.  Air
> > gets absorbed by the tyre over time and you lose pressure.  Using
> > Nitrogen stops this, meaning your tyres *should* remain at the same
> > pressure.
> 
> Sounds like a good excuse not to check your tyres regularly, conveniently 
> forgetting it's not just pressure that should be checked.

Indeed. I still remember parking a wagon up one night and doing my 
standard daily check the following day, despite it not being used, to 
find most of the tread had delaminated on one of the drive axle tyres. 
Didn't feel a thing the previous night on the run back.

-- 
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

Adrian  wrote:

> Bod  gurgled happily, sounding much like they were
> saying:
> 
> > Are there any benefits other than a more stable tyre teperature, if you
> > use Nitrogen instead of air to pump up your tyres?
> 
> Your fuel economy may be slightly better, due to the decreased weight of
> your wallet.

Took my wife to Micheldever Tyres recently to gt a new pair of tyres for
her Merc. The bloke taking details tried to sell the "benefits" of
filling the tyre with N2. I made much the same observation that you do
above. I also politely turned down the offer to mess with the tracking
since there was no sign of uneven tyre wear and no handling issues.

They did try the FUD approach.

Bod  wrote:

> slider wrote:
[snip]
> > It's used to stop the tyre slowly deflating over a period of time.

No it's not.

> > Air gets absorbed by the tyre over time and you lose pressure.  Using
> > Nitrogen stops this, meaning your tyres *should* remain at the same
> > pressure.

Utter cobblers.

> > Whether this works is another thing!

No, it doesn't work because it doesn't happen.

> I think it does, because Nitrogen molycules are larger than oxygen.

The diameter of a nitrogen molecule is 300 picometres. The diameter of
an oxygen molecule is 292 picometres. The difference in size is
insignificant and could not account for different diffusion rate through
steel/alloy and rubber.


> The thing is, if tyres are checked weekly, this really becomes a non
> issue.

It isn't an issue, full stop.

If either of you engaged your brains you would realise that inflating
tyres with nitrogen started with racing cars. Racing car tyres are
changed several times during a race. Hence any "advantage" of stability
of inflation due to gas diffusing through the tyre/wheel just can't
happen. The tyre isn't on the car for long enough. Nor is there an
advantage of extended tyre life as a result of the tyre not being
attacked by oxygen in the air inside the tyre, again the tyres don't
last long enough for that to be an issue. It's not even an issue for
tyres on a road car. The outside of the tyre is bathed in air and the
tyre is exposed to ozone and sunlight which are the factors likely to
cause premature aging.

So, your answers are bunk and one has to consider why do racing teams
use nitrogen? Well, partly because racing teams are as much victims of
snake oil as anyone else and partly because, unlike compressed air,
nitrogen is dry. When a tyre filled with air is run hot the water in the
air expands significantly and changes the tyre pressure and hence the
shape of the contact patch. Dry nitrogen expands less than air from a
compressor. These are really not issues for on-road use.

"Bod"  wrote in message 
news:7l7qn6F3blft4U1@mid.individual.net...
> Paul - xxx wrote:
>> Bod wrote:
>>
>>> Are there any benefits other than a more stable tyre teperature, if
>>> you use Nitrogen instead of air to pump up your tyres?
>>
>> Not in general road use.
>>
>> Racing might see some gains, but it's probably marginal unless you're
>> competing at the highest levels.
>>
> Yes, I've noticed that F1 etc, use pure Nitrogen.
> Considering that standard air is 79% Nitrogen, I can't see that the extra 
> N would make that much difference to a road car.
> Aeroplane tyres use N for different reasons though.
>
> Bod

The main advantage is that it is *dry* nitrogen and contains no water 
vapour.  The vapour in air is less than ideal as it causes more pressure 
change with tempeature than dry air alone.

I believe that dry nitrogen is routinely used in aircraft tyres.

"Conor"  wrote in message 
news:MPG.2558ce1a556b705d9898db@news.eternal-september.org...

> Tyre pressures are supposed to be checked weekly. I've never had a
> healthy one deflate sufficiently between checking, even when not weekly,
> that it would be more than 1-2 PSI.

Had nitrogen in new tyres on two cars - thought it was worth a try - that 
was over  2 years ago - the PSI has hardly  changed (varies 1 or2 psi 
summer/winter though this may be due to the pump) but never had to top them 
up

thomas  wrote:

> Had nitrogen in new tyres on two cars - thought it was worth a try - that
> was over  2 years ago - the PSI has hardly  changed (varies 1 or2 psi
> summer/winter though this may be due to the pump) but never had to top them
> up

Toomy in "talking complete shite again" shocker.

On Nov 2, 1:31 pm, %ste...@malloc.co.uk (Steve Firth) wrote:
> thomas  wrote:
> > Had nitrogen in new tyres on two cars - thought it was worth a try - that
> > was over  2 years ago - the PSI has hardly  changed (varies 1 or2 psi
> > summer/winter though this may be due to the pump) but never had to top them
> > up
>
> Toomy in "talking complete shite again" shocker.

You're a cocky cunt, aren't you?
Related to Conor?

Wanker

On Nov 2, 10:50 am, Bod  wrote:
> slider wrote:
> > "Bod"  wrote in message
> >news:7l7pouF3777q3U2@mid.individual.net...
> >> Are there any benefits other than a more stable tyre teperature, if you
> >> use Nitrogen instead of
> >> air to pump up your tyres?
>
> >> Bod
>
> > It's used to stop the tyre slowly deflating over a period of time.  Air gets
> > absorbed by the tyre over time and you lose pressure.  Using Nitrogen stops
> > this, meaning your tyres *should* remain at the same pressure.
>
> > Whether this works is another thing!
>
> I think it does, because Nitrogen molycules are
> larger than oxygen.

So why not fill tyres with CO2 (bigger still) and cure global warming
at the same time?

MBQ

On 2 Nov, 12:25, "thomas"  wrote:
> "Conor"  wrote in message
>
> news:MPG.2558ce1a556b705d9898db@news.eternal-september.org...
>
> > Tyre pressures are supposed to be checked weekly. I've never had a
> > healthy one deflate sufficiently between checking, even when not weekly> > that it would be more than 1-2 PSI.
>
> Had nitrogen in new tyres on two cars - thought it was worth a try - that
> was over  2 years ago - the PSI has hardly  changed (varies 1 or2 psi
> summer/winter though this may be due to the pump) but never had to top them
> up

The pressures in the Puma never varied. I checked them weekly.

The rims weren't kerbed and fucked though. Most of the other tat I
drive around in has some sort of rim maladies and seem to lose a psi
or two over a month

Mike P

"Steve Firth" <%steve%@malloc.co.uk> wrote in message 
news:1j8jvyc.1fsa1tn1jlgjolN%%steve%@malloc.co.uk...
> Adrian  wrote:
>
>> Bod  gurgled happily, sounding much like they 
>> were
>> saying:
>>
>> > Are there any benefits other than a more stable tyre teperature, if you
>> > use Nitrogen instead of air to pump up your tyres?
>>
>> Your fuel economy may be slightly better, due to the decreased weight of
>> your wallet.
>
> Took my wife to Micheldever Tyres recently to gt a new pair of tyres for
> her Merc. The bloke taking details tried to sell the "benefits" of
> filling the tyre with N2. I made much the same observation that you do
> above. I also politely turned down the offer to mess with the tracking
> since there was no sign of uneven tyre wear and no handling issues.

That would explain how Micheldever Tyres tend to offer good prices on tyres. 
They actually make their money by selling other stuff you don't need (no 
doubt at enormous mark-up).

On 02/11/2009 16:06, Man at B&Q wrote:
> On Nov 2, 10:50 am, Bod  wrote:
>> slider wrote:
>>> "Bod"  wrote in message
>>> news:7l7pouF3777q3U2@mid.individual.net...
>>>> Are there any benefits other than a more stable tyre teperature, if you
>>>> use Nitrogen instead of
>>>> air to pump up your tyres?
>>
>>>> Bod
>>
>>> It's used to stop the tyre slowly deflating over a period of time.  Air gets
>>> absorbed by the tyre over time and you lose pressure.  Using Nitrogen stops
>>> this, meaning your tyres *should* remain at the same pressure.
>>
>>> Whether this works is another thing!
>>
>> I think it does, because Nitrogen molycules are
>> larger than oxygen.
>
> So why not fill tyres with CO2 (bigger still) and cure global warming
> at the same time?

Have a puncture and melt an icecap. ;-)

On 2 Nov, 11:10, Conor  wrote:
> In article , Adrian says...
>
>
>
> > "slider"  gurgled happily, sounding much like they were
> > saying:
>
> > > It's used to stop the tyre slowly deflating over a period of time.  Air
> > > gets absorbed by the tyre over time and you lose pressure.  Using
> > > Nitrogen stops this, meaning your tyres *should* remain at the same
> > > pressure.
>
> > Sounds like a good excuse not to check your tyres regularly, conveniently
> > forgetting it's not just pressure that should be checked.
>
> Indeed. I still remember parking a wagon up one night and doing my
> standard daily check the following day, despite it not being used, to
> find most of the tread had delaminated on one of the drive axle tyres.
> Didn't feel a thing the previous night on the run back.
>
> --
> Conorwww.notebooks-r-us.co.uk
>
> I'm not prejudiced. I hate everybody equally.

Steer clear of them remoulds or even worse them retreads.

On 2 Nov, 18:39, "Graculus" 
wrote:
> "Steve Firth" <%ste...@malloc.co.uk> wrote in message
>
> news:1j8jvyc.1fsa1tn1jlgjolN%%steve%@malloc.co.uk...
>
>
>
> > Adrian  wrote:
>
> >> Bod  gurgled happily, sounding much like they
> >> were
> >> saying:
>
> >> > Are there any benefits other than a more stable tyre teperature, if you
> >> > use Nitrogen instead of air to pump up your tyres?
>
> >> Your fuel economy may be slightly better, due to the decreased weight of
> >> your wallet.
>
> > Took my wife to Micheldever Tyres recently to gt a new pair of tyres for
> > her Merc. The bloke taking details tried to sell the "benefits" of
> > filling the tyre with N2. I made much the same observation that you do
> > above. I also politely turned down the offer to mess with the tracking
> > since there was no sign of uneven tyre wear and no handling issues.
>
> That would explain how Micheldever Tyres tend to offer good prices on tyres.
> They actually make their money by selling other stuff you don't need (no
> doubt at enormous mark-up).

How much would that 'service' cost.

In article <daf7daf1-d8d8-4e0b-88f3-8b40a5d70981
@a32g2000yqm.googlegroups.com>, NM says...

> Steer clear of them remoulds or even worse them retreads.

Every tyre I've had which has lost the tread has been a pukka new job, 
not a remould or retread.

-- 
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

"Paul McCock"  wrote in message 
news:50dc7b65-b100-4b06-a006-ced7adf8c814@r5g2000yqb.googlegroups.com...
On Nov 2, 1:31 pm, %ste...@malloc.co.uk (Steve Firth) wrote:
> thomas  wrote:
> > Had nitrogen in new tyres on two cars - thought it was worth a try - 
> > that
> > was over 2 years ago - the PSI has hardly changed (varies 1 or2 psi
> > summer/winter though this may be due to the pump) but never had to top 
> > them
> > up
>
> Toomy in "talking complete shite again" shocker.

>You're a cocky cunt, aren't you?
>Related to Conor?

>Wanker

I Agree.  He thinks he knows it all.  The power of google!