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BDifficulty 2/5

For a car’s tyres, what is the legal minimum tread depth in the principal grooves?

Correct answer

1.6 mm.

1.6 mm. Do not drive with less tread depth. Tyres must also be sound: damage, deformation or other defects may require earlier replacement even with sufficient tread. Meeting the minimum does not guarantee equal grip on every surface or replace manufacturer maintenance advice.

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  • 2 mm.

  • 1.6 mm.

  • 3 mm.

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