Learn about tire tread depth and its importance for safe driving. Discover the importance of new tires' depth of 8-9 mm and the reduction through wear.
Tread depth means the depth of the tires. New tyres usually have a depth of between 8-9 mm. This depth decreases as the tires wear out. Tyres with a tread depth between 3-4 mm have clearly reduced wet properties. The minimum permitted tread depth on summer tyres is 1.6 mm. On winter tyres, the minimum permitted tread depth is 3.0 mm.
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