Nitrogen filled tyres

[guest806]

Just had two new tyres fitted to the rear of the Jazz.  Got totally ripped off by a National dealer but an negotiating a refund of the difference (paid £180 for two Toyo PR-1, local dealer would have done it for £110.)  The local dealer had a sign up about filling the tyres with Nitrogen. Has any one done this or know anything about it? Apparently, as the molecules are bigger they keep the tyre pressure more constant, for longer and through a wider range of temperatures.
Any comments on the Nitrogen or the Toyo tyres welcome.

[nowster]

Air is 78% nitrogen.

Nitrogen is less dense than air -- the 21% oxygen is of a slightly heavier weight, and the remaining 1% of argon, neon and the rest are of much heavier weight.

I'd have thought that more important to the handling is whether there is moisture in the gas that the tyres are filled with.

Also see: http://www.straightdope.com/columns/read/2694/is-it-better-to-fill-your-tires-with-nitrogen-instead-of-air

[culzean]

Oxygen is a very active gas (causes things to rust and generally break down) so excluding it from anything (except your lungs) would seem to be a good idea.

The main thing about nitrogen is that the molecules are big, so it should leak more slowly, and it is free of water, so without water and oxygen your wheels and tyres should be better off, but any affect is probably marginal.

While it may be good for racing car tyres where it is used to keep tyre pressure more constant with temperature, for most people this is probably in the snake-oil category, and something that garages can charge you about £1 a tyre for - nice little earner as nitrogen is cheap to buy (widely used in food packing industry to improve shelf life of products).

[nowster]

Do they have a label you can put on them that says, "Packaged in an inert atmosphere"? 

[guest765]

Is it a better option for car tyres 

[guest598]

I have a 1400 ex new shape Jazz, done 7500 miles I picked up a nail they said it wasn't repairable. due to it being an unusual size on the Jazz there wasn't many tyre manufactures made those tyre's i had to buy a continental for £110 I feel i was ripped off. 

[JazzyB]

Searching online I found a continental for £88 fitted.