CDL · Vehicle inspection

What is true of the two tires in a set of duals?

Correct answer: They should not touch each other at all.

Answer options

  1. AThey should touch only when the vehicle is fully loaded
  2. BThey should press firmly against each other
  3. CThey should not touch each other at all Correct

Why

The two tires of a dual set need space between them; if they rub against each other or against the vehicle, the friction creates heat and wear that can lead to a blowout. Contact can also be a sign of mismatched sizes or low air pressure.

About this question

Topic: Vehicle inspection   License: CDL

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Where it applies: Asked in every state.

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