UK Driving Theory Practice Exam 2025 – Complete Study Resource

The recommended practice is to check tyre pressure when the tyres are cold because this provides the most accurate measurement. Tyre pressure can increase when tyres are driven on and heat up, which may lead to a reading that is higher than the actual pressure when cold. Therefore, checking the pressure after the vehicle has been stationary for a while, particularly before long journeys or once a week, will help ensure that the tyres are inflated to the manufacturer's recommended levels. This is essential for optimal vehicle performance, fuel efficiency, and safety on the road.

When considering other options, checking tyres only when they appear low may not be sufficient, as the tyres could be under-inflated without showing visible signs. Checking daily, while indicative of good maintenance, may be excessive for most drivers unless there are specific concerns. Lastly, neglecting to check tyre pressure regularly can lead to serious safety issues.