Manitoba Knowledge Test Coach
Safe drivingQuestion 271 of 310

Below what tread depth does the handbook say to replace a tire?

  1. 0.5 millimetres
  2. 3 millimetres
  3. 1.6 millimetres
  4. 5 millimetres
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Correct answer: 1.6 millimetres

A tire with tread under 1.6 mm no longer grips well and must be replaced.

Source: Driver's Handbook (Manitoba Public Insurance, February 2026), Tires, page 92

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Questions last reviewed: 18 October 2026