Theory Test Practice Ireland

Question 1149 · Truck theory test

What is an effect of under-inflated tyres on a vehicle?

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Correct answer

Impaired braking and steering.

Official explanation

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 manufacturer’s guidelines, information on which can be found in the vehicle handbook.

Topic
Technical matters · Vehicle Mechanics
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This question also appears in the bus theory test.

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