Correct answer
Check and adjust pressure when the tyres are cold.
Check and adjust cold tyre pressure to the recommended value for the load and operating conditions. Pressure normally rises while driving: do not release air from a warm tyre to bring it down to the specified cold value. A warm measurement can help detect a problem but must not be interpreted as a cold reading. After driving, allow the tyres to cool under the applicable instructions. Do not arbitrarily reduce pressure by 10% because of load or higher speed.
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Release air from warm tyres until they reach the recommended cold pressure.
Always reduce pressure by 10% when the vehicle is loaded or driven at higher speed.
Check and adjust pressure when the tyres are cold.
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