Why is the tread of a tyre important in rain?

Answer and explanation

Correct answer: C. The grooves clear water from under the tyre

  1. Step 1: Worn tread cannot clear water. Step 2. This raises the risk of aquaplaning. Answer: The grooves clear water from under the tyre. Why not the others: The tread makes the tyre quieter on wet roads: noise is not its safety function. The tread increases engine power when accelerating: the engine does not depend on tread. The tread keeps the tyre cool at high speed: tread depth is about water dispersal.

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