When are you advised to increase your tyre pressures so that they're higher than normal? When are you advised to increase your tyre pressures so that they're higher than normal?

• Possible answers:

   
• A. When you'll be filling the fuel tank
• B. When you'll be driving on very rough roads
• C. When you'll be driving in cold or wet weather
• D. When you'll be driving at high speeds over long distances