Tire tread
WARNING
Although the applicable federal motor vehicle safety laws consider a tire to be worn when the tread wear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we recommend that you do not allow your tires to wear down to that level. As tread depth approaches 1/8 in (3 mm), the adhesion properties on a wet road are sharply reduced.
Depending upon the weather and/or road surface (conditions), the tire traction varies widely.
Do not use tires that are excessively worn as the tire traction on wet road surfaces decreases significantly when the tread depth is less than 1/8 inch (3 mm).
Tread wear indicators (TWI) are required by law. Six indicators are positioned on the tire tread. They become visible as soon as a tread depth of approximately 1/16 inch (1.6 mm) has been reached. If this is the case, the tire is so worn that it must be replaced.
The recommended tread depth for summer tires is at least 1/8 inch (3 mm). The recommended tread depth for winter tires is at least 1/6 inch (4 mm).

Bar marking 1 for tread wear is integrated into the tire tread.
See also:
Tire pressure of 180 kPa (1.8 bar/
26 psi) is reached
•► Press the on/off switch on the tire inflation
compressor to 0.
The tire inflation compressor is switched
off.
•► Unscrew the filler hose from the valve of
the faulty tire.
Afte ...
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To ensure the longevity and full
performance of the engine, only premiumgrade
unleaded gasoline may be used.
If there is no premium-grade unleaded
gasoline available and regular-grade
unleade ...
