Tyre pressures - advice sought

[bigears]

Getting back to the Nitrogen thing it's a bigger molecule so you don't get the same leakage or expansion so more constant wear, we use it in our fire trucks so some of us boys have put it in our bikes $5 tyre and topped up for free and only have to pay when a new tyre is put on. Worth a Go?

[howdamnhard]

[QUOTE=Elysium;1129452262]You could always try this Hydrogen or what ever that gas is racers like to put in their tyres. I think they do them to car tyres at Firestone now too.
ERR don't use Hydrogen, that could be fatal (as in explosive). Nitrogen is the gas you are thinking of. It is an inert gas thus no fire or corrosion risk. It does not imbue tyres with magical properties though contary to popular belief.

[howdamnhard]

Getting back to the Nitrogen thing it's a bigger molecule so you don't get the same leakage or expansion so more constant wear, we use it in our fire trucks so some of us boys have put it in our bikes $5 tyre and topped up for free and only have to pay when a new tyre is put on. Worth a Go?

Take a look at the chemical periodic table. Oxygen is actually a bigger molecule than nitrogen. Air is made up about 78% N , 21% O and then various other gases. Nitrogen is an inert gas like Argon , it is relatively cheap and thus is has been used for many years in aviation for tyres to reduce the risk of fire and also corrosion.
You being a fireman will understand the less oxygen the better regarding fires.

[howdamnhard]

Got me a Tyre Gauge at a mates advice

Test them cold

Got em on 38r and 36f and man that bike is sweeeeeet

Oh man Tyre pressure is so fuckin important wow has this been an eye opener

I used to just leave it to the guys in teh shop....and they had me 46-42


Never again

Yeh tyre pressures are a lot more critical on bikes, check them often.