Nitrogen fill

[jabz]

If I have nitrogen filled tyres and need to top up can i mix standard air? any issues I should I top up wid nitrogen if so who'd do this for free?

[Koom]

Normal "air" is 70-80% nitrogen anyway (I can't remember the specifics, too long since I opened a textbook) and doesn't really make a huge difference for driving round on the street.

Not sure if Firestone charge for nitrogen filling but most of their branches do it.

[Joker]

'was' $5 per tire

pure gimmick on street car IMHO

[driftrex]

get rid of the nitrogen, you cant check your tyre pressure just anywhere so whats the point having it, especially on a road car.

[Koom]

 driftrex said:

get rid of the nitrogen, you cant check your tyre pressure just anywhere so whats the point having it, especially on a road car.

??

Its basically the same as air but air has a bit of oxygen aswell (+some other minor gases).

Just use air to fill if you need to. Nitrogen is a gimmick on road cars as Joker stated. But it really won't matter if you mix it with a bit of air.

[Joker]

its the oxygen that deteriorates EVERYTHING (think rust, rot and decay of any sort)

remove oxygen and yep, you are left with Nitrogen

[Guest huff3r]

The only bonus of nitrogen is constant pressure, regardless of temperature. But, unfortunately in street cars, it is the NITROGEN which corrodes rubber, not the oxygen as previously stated. This works fine in racecars as their tyres aren't usefull long enough to corrode, as they wear through them nice and quick, but in a roadcar this could cause some issues... better to let out as much nitrogen as possible if you are planning on topping up with air AFAIK

[Joker]

oooh interesting

[Koom]

 huff3r said:

The only bonus of nitrogen is constant pressure, regardless of temperature. But, unfortunately in street cars, it is the NITROGEN which corrodes rubber, not the oxygen as previously stated. This works fine in racecars as their tyres aren't usefull long enough to corrode, as they wear through them nice and quick, but in a roadcar this could cause some issues... better to let out as much nitrogen as possible if you are planning on topping up with air AFAIK

Seriously??

Constant pressure regardless of temperature?? Wat?? The gods of thermodynamics are crying right now.

Dry Nitrogen filled tyres increase pressure with temperature at a more consistent rate (due to no water molecules) so then it is easier to consistently fill the tyres to the required temperature. This makes it easier to fill the cold tyres on a racecar (filled to the nearest 1/4 psi) before a race so that they will be at the optimum pressure by the time they have warmed up. The tyres on the race cars I work on generally rise in pressure by ~4-6psi between hot and cold.

Reading this study below that was done by some Ford Engineers (about 2 mins worth of Googling) shows that Nitrogen filled tyres age slower than those with air (i.e. the rubber retains its properties for longer)

http://www.nitrofill.com/documents/Rubber-News-Nitrogen-Tire-Study1.pdf

The worry with air (containing Oxygen and Water Vapour) is that it can corrode the steel belt inside the tyre rather than deteriorating the rubber.

What difference is removing the Nitrogen and replacing it with another gas that is 78% Nitrogen going to do in the real world anyway??

[johnny5]

 Koom']

[quote name='huff3r said:

The only bonus of nitrogen is constant pressure, regardless of temperature. But, unfortunately in street cars, it is the NITROGEN which corrodes rubber, not the oxygen as previously stated. This works fine in racecars as their tyres aren't usefull long enough to corrode, as they wear through them nice and quick, but in a roadcar this could cause some issues... better to let out as much nitrogen as possible if you are planning on topping up with air AFAIK

/quote]

Seriously??

Constant pressure regardless of temperature?? Wat?? The gods of thermodynamics are crying right now.

Dry Nitrogen filled tyres increase pressure with temperature at a more consistent rate (due to no water molecules) so then it is easier to consistently fill the tyres to the required temperature. This makes it easier to fill the cold tyres on a racecar (filled to the nearest 1/4 psi) before a race so that they will be at the optimum pressure by the time they have warmed up. The tyres on the race cars I work on generally rise in pressure by ~4-6psi between hot and cold.

Reading this study below that was done by some Ford Engineers (about 2 mins worth of Googling) shows that Nitrogen filled tyres age slower than those with air (i.e. the rubber retains its properties for longer)

http://www.nitrofill.com/documents/Rubber-News-Nitrogen-Tire-Study1.pdf

The worry with air (containing Oxygen and Water Vapour) is that it can corrode the steel belt inside the tyre rather than deteriorating the rubber.

What difference is removing the Nitrogen and replacing it with another gas that is 78% Nitrogen going to do in the real world anyway??

touche LOL

[Scoobydoo]

I got my tyres filled with nitrogen yesterday when I got them put on. Guess I got sucked in haha!

[johnny5]

 Scoobydoo said:

I got my tyres filled with nitrogen yesterday when I got them put on. Guess I got sucked in haha!

Depends on whos right and whos wrong..... If l fill mine with helium will it give me a weight reduction? Maybe.......... just a thought

[soopersubaru]

 Koom']

[quote name='huff3r said:

The only bonus of nitrogen is constant pressure, regardless of temperature. But, unfortunately in street cars, it is the NITROGEN which corrodes rubber, not the oxygen as previously stated. This works fine in racecars as their tyres aren't usefull long enough to corrode, as they wear through them nice and quick, but in a roadcar this could cause some issues... better to let out as much nitrogen as possible if you are planning on topping up with air AFAIK

/quote]

Seriously??

Constant pressure regardless of temperature?? Wat?? The gods of thermodynamics are crying right now.

Dry Nitrogen filled tyres increase pressure with temperature at a more consistent rate (due to no water molecules) so then it is easier to consistently fill the tyres to the required temperature. This makes it easier to fill the cold tyres on a racecar (filled to the nearest 1/4 psi) before a race so that they will be at the optimum pressure by the time they have warmed up. The tyres on the race cars I work on generally rise in pressure by ~4-6psi between hot and cold.

Reading this study below that was done by some Ford Engineers (about 2 mins worth of Googling) shows that Nitrogen filled tyres age slower than those with air (i.e. the rubber retains its properties for longer)

http://www.nitrofill.com/documents/Rubber-News-Nitrogen-Tire-Study1.pdf

The worry with air (containing Oxygen and Water Vapour) is that it can corrode the steel belt inside the tyre rather than deteriorating the rubber.

What difference is removing the Nitrogen and replacing it with another gas that is 78% Nitrogen going to do in the real world anyway??

Koom here is absolutly correct.

Having seen tires removed after service life (30,000km) filled with air They always have an accumulation of rubber debris on the inside

However those that use N2 are clean and usually have held pressure over there service life.

Certainly a slightly different ride. If one actually notices.( good to hi end drivers do)

Service life of the tyre is prolonged and rubbery-ness is maintained over their service life.

A good call for all! Costs F%@*&K all too

[aim]

Hey Hamish, remember that comment you made 2 years ago nearly 3 years ago that one time? Man that was awesome.

[Koom]

 aim said:

Hey Hamish, remember that comment you made 2 years ago nearly 3 years ago that one time? Man that was awesome.

haha they were good times back before stress burned me out and my smartass replies turned into grumpy comments. Least I'm not as much of a grumpy old man as Joker is becoming (yet).......

[Joker]

soon

............soon

[pedro]

Joker doesnt qualify as being "old"yet,but grumpiness is creeping in...

[subieboy]

 Koom']

[quote name='aim said:

Hey Hamish, remember that comment you made s]2 years ago[/s] nearly 3 years ago that one time? Man that was awesome.

haha they were good times back before stress burned me out and my smartass replies turned into grumpy comments. Least I'm not as much of a grumpy old man as Joker is becoming (yet).......

Hahahaha I am fast joining Joker on the "Grumpy Old man stakes" Or is that him joining me???