Correct answer: A. Impaired braking and steering.
Drivers should check their vehicle's tyre pressures (including the spare) regularly at least once a week. Under-inflated tyres adversely affect many of a vehicle's systems, including braking ability, suspension, steering, fuel consumption and premature tyre wear. Tyres should always be inflated according to the vehicle manufacturers guidelines, information on which can be found in the vehicle handbook.
This is an official-style question from the Technical Matters topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.
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