Fill tyres with nitrogen and gain 5% MPG ?

cardinalbiggles

It's one big con to make money for nothing, nitrogen is so common them being able to get a quid per tyre for it is easy money! It will make no difference whatsoever to economy, lets face it its for a particular segment of the market....

msmyth18

fatbelly wrote: »

If this slow deflation argument had any logic to it, they'd use CO2, which is a larger molecule than N2 or O2

Or H2o ? isnt that bigger still

missile

decsdad wrote: »

According to kwik-fit website. blah blah

:rotfl: I would not trust anything I read on Kwik-Fit website :rotfl:

cyclonebri1

Coveredinbees!!!! wrote: »

In that case it has to be baloney :rotfl:

Kwirkcarp and Sassy in the one post, :eek::eek::eek: frightening,

Farzackerly

decsdad wrote: »

According to kwik-fit website.
I was just pricing an impending tyre replacement, and it asked if I wanted nitrogen in the tyres £1 extra, each.
25% longer tyre life, 5% better fuel economy, better road holding and handling.

Anybody heard of this, done it etc ?

Thanks

It's a load of utter cobblers.

Goldenyears

One or two misconceptions in this thread.
Nitrogen, oxygen or air at normal tyre pressures are as near ideal gases as makes no difference. Thermal expansion is the same.

Race teams use nitrogen because it makes no sense to use anything else. Do they lug air compressors around with all the drying cartridges - probably not. Why not use compressed air cylinders then ? What most don't realise is compressed industrial air in cylinders hasn't been made directly from air for more than 30 years. It's made by blending dry industrial nitrogen and dry oxygen - the easiest way to make dry synthetic air. But it's pointless teams using such air to inflate tyres. Just use nitrogen instead (why add the oxygen) which is what the tyre outfits are also doing. Probably cheaper anyway and making a marketing virtue out of necessity.

Now there is some truth in differences in nitrogen permeability through rubber versus oxygen but it's a fine point not worth worrying about. Keeping the moisture content low is more important.