All four tyres on your car measure 1.8 mm of tread. What is the sensible action?

Answer and explanation

Correct answer: A. Plan to replace them soon

  1. Step 1: The legal limit is 1.6 mm, so the margin is only 0.2 mm. Step 2. Tyres that close to the limit grip poorly in the wet, so replace them soon. Answer: Plan to replace them soon. Why not the others: The margin is tiny, and swapping tyres or adding air does not restore tread.

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