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What is the allowable minimum depth of the thread in a tire not fitted with a tire indicator bar.

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Official question no. 3784

This question applies to categories: B, B1

Active navigation category: B1

What is the allowable minimum depth of the thread in a tire not fitted with a tire indicator bar.
1. 1.6 millimetres.
2. 2.6 millimetres.
3. 3 millimetres.
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