Why do my tyres lose pressure?
Whilst laziness is probably behind people not regularly checking their tyres, an additional cause for the under inflated tyres is the air that’s used to fill them… At present most tyres on our roads are filled with compressed air. This is the same air that we breathe; it’s just as a higher pressure. Air is not just a single gas, but is a mixture of roughly 21% oxygen and 78% nitrogen plus some other trace gases such as helium and water vapour. The reason that a tyre will lose pressure over time is a result of oxygen from the compressed air ‘leaking’ out through the rubber of the tyre. The tyre acts as a membrane through which oxygen will permeate (leak). The difference in partical pressure of the oxygen inside the tyre and outside causes this. Filling with TyreSaver means there’s no problem because the TyreSaver equipment removes oxygen and water vapour from the compressed air before it reaches your tyre. This means that your tyre will stay at the correct pressure for longer.
