Newfoundland and Labrador Permit Test Coach
Safe drivingQuestion 84 of 288

What is the minimum tire tread depth that must remain?

  1. 0.5 mm.
  2. 1.5 mm.
  3. 3.0 mm.
  4. 5.0 mm.
Show answer

Correct answer: 1.5 mm.

Worn tires grip poorly, especially on wet or icy roads.

Source: Driver's Handbook (Government of Newfoundland and Labrador, January 2025), Tires, page 49

Practice safe driving

Questions last reviewed: 18 October 2026