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Question

Difficulty: MediumBasic Maintenance and Daily Checks

Under UK law, what is the legal minimum tyre tread depth required across the central three-quarters of the breadth and around the entire outer circumference of a car tyre?

  1. A
    1.0 mm
  2. 1.6 mmAnswer
  3. C
    2.5 mm
  4. D
    3.0 mm

Answer

The legal minimum tyre tread depth for a car is 1.6 mm across the central three-quarters of the breadth and around the entire outer circumference.
Under UK law, car tyres must have a minimum tread depth of 1.6 mm throughout a continuous band comprising the central three-quarters of the breadth of the tyre and around its entire outer circumference.

Step-by-Step Solution

1
Identify the statutory roadworthiness standard for car tyres in the UK.
UK law mandates that tread depth must not fall below a specific threshold across the central three-quarters of the tyre.
Sufficient tread depth is essential to disperse water effectively and maintain tyre grip on wet roads.
2
Determine the exact measurement specified by UK regulations.
The minimum legal limit is exactly 1.6 mm.
Driving on tyres below 1.6 mm is illegal, invalidates insurance, and results in penalty points and fines per defective tyre.

Key Concept

Statutory minimum tyre tread depth for passenger cars
Estimated Time:45s
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Topics

Basic Maintenance and Daily Checks

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