Volkswagen Golf GTI 2016, Owner'S Manual

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operation once the tread pattern is worn down to
a depth of 3/16 in. (4.8 mm).
The tread depth of new tires can differ between
tire models and manufacturers because of the
different design features and tread patterns.
Tread wear indicator (TWI) in the tire
The 1/16 in. (1.6 mm) high wear indicators are
molded into the bottom of the tread grooves of
the original tires running across the treads
→ Fig. 111 . Several wear indicators are evenly
spaced around the tire. Markings on the sides of
the tires (for example TWI or symbols) show the
position of the wear indicators.
Wear indicators show when the tires are worn