Revision question · Safety and your vehicle

What's the legal minimum tread depth for tyres on your trailer or caravan?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

1 mm

1.6 mm

2 mm

2.6 mm

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1.6 mmThis was the right answer

Trailers and caravans may be left in storage over the winter months, and tyres can deteriorate. It’s important to check their tread depth and also their pressures and general condition. The legal tread depth of 1.6 mm applies to the central three-quarters of a tyre's breadth, over its entire circumference.

Reviewed reading for this question

Pressure, tread and tyre defectsReviewed guidance summary · The tyre section covers inflation, defects, uneven wear and the 1.6 mm car/light-trailer tread requirement across the central three-quarters around the full circumference.

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