Question 76 of 140

You notice smoke coming from one of the trailer's wheels while driving. What should this signal to you?

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A sign that the tires are simply new and breaking in
An indication the trailer needs more air in that tire
A possible brake or wheel bearing problem serious enough to stop and inspect right away
Normal heat from everyday driving that doesn't need any attention or a closer look at the wheel

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Correct answer to question 76 (Combination Vehicles): A possible brake or wheel bearing problem serious enough to stop and inspect right away

Why

Smoke from a wheel usually means a dragging brake or failing bearing generating enough heat to be dangerous, including a possible fire risk, so it calls for stopping and inspecting immediately rather than continuing.

Updated: November 2026

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You notice smoke coming from one of the trailer's wheels while driving. What should this signal to you?

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