Division 6.6.11.3 F1
The tread wear indicators shall provide a means of indicating, with a tolerance of + 0,60/-0,00 mm, when the tread grooves are no longer more than 1,6 mm deep.
The tread wear indicators shall provide a means of indicating, with a tolerance of + 0,60/-0,00 mm, when the tread grooves are no longer more than 1,6 mm deep.