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BDifficulty 2/5

To check pressure against the manufacturer’s recommended cold value, in what condition should tyres be measured?

Correct answer

Cold, without heat from driving.

Cold, without heat from driving, following manufacturer instructions and using a pressure gauge. A cold tyre may be at ambient temperature: these are not opposite conditions. Pressure rises as it warms; do not release air from a hot tyre merely to match the cold value. If a hot check is necessary, follow the applicable specific guidance and recheck cold.

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  • Only after driving until they are very hot.

  • Without measuring, judging pressure only from appearance.

  • Cold, without heat from driving.

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