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Wear and deterioration around the 'edge' of each tyre, which is serious if the metal ply is staring to show through, and also a flat or unrounded appearance at the bottom of the tyre. Tyre pressure is measured in Psi (pounds per square inch), and correct tyre pressure can be taken using both manual or digital pressure gauges, that are available in most car accessory shops. They aren't expensive, but remember that each make and model of car has it's own correct precise tyre pressure, and there can also be a difference in pressure requirement between the front and rear tyres.

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7y ago

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