Correct answer: A. When each type is fitted on a different axle.
In general, you should fit the same type of tyres all round the vehicle. However if you need to fit a mix of cross-ply and radials, the tyres on any axle should be of the same type.
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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