tyre valve covers

Ben, nitrogen is thicker than air so doesn't leak out as much so tyre goes down slower oh yes and doesn't have water in it like air

http://www.atseuromaster.co.uk/nitrogen-inflation.htm

As a chemist I have to point out that

1/. Air is 78% nitrogen, 21%Oxygen, the rest is water vapour and a few gases like Zenon and Neon.
2/. A Nitrogen (N2)molecule is smaller than an Oxygen(O2) molecule.


The advantage of Nitrogen is that it is dry. No water vapour.

But if you have a leak its no good?

A leak as in a puncture??

If you go back to ATS for a puncture repair we will refill tyre with nitrogen.

Likewise once you pay for nitrogen and think you need a top up, we do that for free.

Just like if you popped in for a regular air check.

Nice 1 the green TF has a slow puncture on the back. One last question about tyres Andy please.

I have two sets of 16s some with branded tyres others with cheapos some alloys mint others shoddy.

What does it cost to swap em about?

David Aiketgate wrote: As a chemist I have to point out that

1/. Air is 78% nitrogen, 21%Oxygen, the rest is water vapour and a few gases like Zenon and Neon.
2/. A Nitrogen (N2)molecule is smaller than an Oxygen(O2) molecule.


The advantage of Nitrogen is that it is dry. No water vapour.

Hence the tyre temp makes no difference on the pressure ?

bensewell wrote: Nice 1 the green TF has a slow puncture on the back. One last question about tyres Andy please.

I have two sets of 16s some with branded tyres others with cheapos some alloys mint others shoddy.

What does it cost to swap em about?

We usually charge for a valve n balance to the wheels you want swapping tyres to.

But if you approach one of us van fitters to do it on the side *wink wink* it'll be cheaper

paulsmgf wrote:

David Aiketgate wrote: As a chemist I have to point out that

1/. Air is 78% nitrogen, 21%Oxygen, the rest is water vapour and a few gases like Zenon and Neon.
2/. A Nitrogen (N2)molecule is smaller than an Oxygen(O2) molecule.


The advantage of Nitrogen is that it is dry. No water vapour.

Hence the tyre temp makes no difference on the pressure ?

Yep, that's why it's popular for track cars!