Practice question

What is the minimum legal tyre tread depth requirement for a vehicle to be considered roadworthy, and how is it measured?

  1. No minimum depth is specified as long as no fabric is showing
  2. At least 1 millimetre of tread around the full circumference and across 75% of the tyre's breadth, including the spare
  3. Exactly 3 millimetres across the entire tyre surface
  4. Tread depth requirements only apply to the front tyres

Answer: B — At least 1 millimetre of tread around the full circumference and across 75% of the tyre's breadth, including the spare

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