Correct answer
With cold tyres.
With cold tyres under the applicable procedure. Pressure rises while driving; do not release air from hot tyres to reach the recommended cold value. After travel, allow cooling under instructions. A hot measurement may help identify a problem but is not equivalent to a cold reading.
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With hot tyres, releasing air until the cold value is reached.
With cold tyres.
Only when a tyre is completely flat.
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