A motorcycle tyre has 1.6 mm tread in the centre but less than 1 mm near an edge. Is it legal?
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Correct answer: B
Regulation 55(1)(g) of the 2003 Regulations requires at least 1 mm across the whole breadth, not merely in the centre.
CitationSource: Road Traffic (Construction and Use of Vehicles) Regulations 2003 (S.I. No. 5 of 2003), Regulation 55(1)(g), checked on 2026-09-15.